Assertion : Inside a conductor, electrons have no motion in the absence of some potential difference across it. Reason : In the absence of potential d

Assertion : Inside a conductor, electrons have no motion in the absence of some potential difference across it. Reason : In the absence of potential d
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Assertion : Inside a conductor, electrons have no motion in the absence of some potential difference ... D. If both Assertion and Reason are false.
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A potential difference of 10 V is applied across a conductor of resistance `1 k Omega`. Find the number of electrons flowing through the conductor in

Description : A potential difference of 10 V is applied across a conductor of resistance `1 k Omega`. Find the number of electrons flowing through the conductor in

Last Answer : A potential difference of 10 V is applied across a conductor of resistance `1 k Omega`. ... of electrons flowing through the conductor in 5 minutes.

Assertion : Potential difference across the terminals of a battery is always less than the emf of the battery. Reason : During discharging of a batter

Description : Assertion : Potential difference across the terminals of a battery is always less than the emf of the battery. Reason : During discharging of a batter

Last Answer : Assertion : Potential difference across the terminals of a battery is always less than the emf of the ... . If Assertion is false but Reason is true.

Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are always present inside the nucleus.

Description : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are always present inside the nucleus.

Last Answer : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are ... both (A) and (R ) are incorrect.

Assertion : Current versus potential difference (i-V) graph for a conductor at two different temperatures `T_(1)` and `T_(2)` is shown in figure. Henc

Description : Assertion : Current versus potential difference (i-V) graph for a conductor at two different temperatures `T_(1)` and `T_(2)` is shown in figure. Henc

Last Answer : Assertion : Current versus potential difference (i-V) graph for a conductor at two different ... If Assertion is false but Reason is true.

The current through a metallic conductor is due to the motion of a. free electrons b. Protons c. Neutrons d. still under controversy

Description : The current through a metallic conductor is due to the motion of a. free electrons b. Protons c. Neutrons d. still under controversy

Last Answer : a. free electrons

The drift speed of electrons in copper wire of diameter and length `l` is `v` . If the potential difference across the wire is doubled, then the new d

Description : The drift speed of electrons in copper wire of diameter and length `l` is `v` . If the potential difference across the wire is doubled, then the new d

Last Answer : The drift speed of electrons in copper wire of diameter and length `l` is `v` . If the potential ... `2upsilon` C. `3upsilon` D. `upsilon//2`

Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt

Description : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt

Last Answer : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason ... . If both Assertion & Reason are false.

5xl016 electrons pass across the section of a conductor in 1 minute 20 sec. The current flowing is

Description : 5xl016 electrons pass across the section of a conductor in 1 minute 20 sec. The current flowing is 

Last Answer : 5xl016 electrons pass across the section of a conductor in 1 minute 20 sec. The current flowing is  0.1 mA.

Barrier potential in a P-N junction is caused by (A) Thermally generated electrons and holes. (B) Diffusion of majority carriers across the junction. (C) Migration of minority carriers across the junction. (D) Flow of drift current.

Description : Barrier potential in a P-N junction is caused by (A) Thermally generated electrons and holes. (B) Diffusion of majority carriers across the junction. (C) Migration of minority carriers across the junction. (D) Flow of drift current.

Last Answer : (B) Diffusion of majority carriers across the junction.

A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Last Answer : ANSWER: W -- CONSTANT

Assertion: Light-harvesting complexes (LHC) on thylkoid membrane broaden the range of light absorption: Reason: They transfer electrons to reaction ce

Description : Assertion: Light-harvesting complexes (LHC) on thylkoid membrane broaden the range of light absorption: Reason: They transfer electrons to reaction ce

Last Answer : Assertion: Light-harvesting complexes (LHC) on thylkoid membrane broaden the range of light absorption: ... . If both Assertion and Reason are false.

Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .

Description : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .

Last Answer : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has ... the Reason is False. D. If both Assertion & Reason are false

Assertion:- Ionic compounds exhibits electrical conductivity in solution state. Reason :- In solution state electrons of ionic compounds are free.

Description : Assertion:- Ionic compounds exhibits electrical conductivity in solution state. Reason :- In solution state electrons of ionic compounds are free.

Last Answer : Assertion:- Ionic compounds exhibits electrical conductivity in solution state. Reason :- In solution state ... . If both Assertion & Reason are false

Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen.

Description : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen.

Last Answer : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen. A. If ... False. D. If both Assertion & Reason are false

Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity of all elements is negative

Description : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity of all elements is negative

Last Answer : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity ... D. If both Assertion & Reason are false

Assertion : Current between two points in an electrical always flows from higher potential to lower potential. Reason : During charging of a battery c

Description : Assertion : Current between two points in an electrical always flows from higher potential to lower potential. Reason : During charging of a battery c

Last Answer : Assertion : Current between two points in an electrical always flows from higher potential to lower ... . If both Assertion and Reason are false.

Assertion (A): Aerosols have potential for modifying climate Reason (R): Aerosols interact with both short waves and radiation (A) Both (A) and (R) are true, and (R) is the correct explanation of (A) (B) Both (A) and (R) are true, but (R) is not the correct explanation of (A) (C) (A) is true, but (R) is false (D) (A) is false, but (R) is true

Description : Assertion (A): Aerosols have potential for modifying climate Reason (R): Aerosols interact with both short waves and radiation (A) Both (A) and (R) are true, and (R) is the correct explanation of (A) (B) Both (A) and (R) ... A) (C) (A) is true, but (R) is false (D) (A) is false, but (R) is true

Last Answer : Answer: A

Assertion : Hardy-Weinberg principle states that in the absence of disturbing influences, gene frequencies of large populations of sexually reproducin

Description : Assertion : Hardy-Weinberg principle states that in the absence of disturbing influences, gene frequencies of large populations of sexually reproducin

Last Answer : Assertion : Hardy-Weinberg principle states that in the absence of disturbing influences, gene ... both the assertion and reason are false.

Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters inside the cell membrane.

Description : Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters inside the cell membrane.

Last Answer : Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters ... D. If both Assertion and Reason are false.

Assertion (A): In equilibrium position, the journal inside a journal bearing remains floating on the oil film. [IES-1995] Reason (R): In a journal bearing, the load on the bearing is perpendicular to the axis of the journal. (a) Both A and R are individually true and R is the correct explanation of A (b) Both A and R are individually true but R is not the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Description : Assertion (A): In equilibrium position, the journal inside a journal bearing remains floating on the oil film. [IES-1995] Reason (R): In a journal bearing, the load on the bearing is perpendicular to the axis of the ... explanation of A (c) A is true but R is false (d) A is false but R is true

Last Answer : (b) Both A and R are individually true but R is not the correct explanation of A

Assertion (A): In steady rotating condition the journal inside a hydrodynamic journal bearing remains floating on the oil film. [IES-2008] Reason (R): The hydrodynamic pressure developed in steady rotating conditions in journal bearings balances the load on the journal. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Description : Assertion (A): In steady rotating condition the journal inside a hydrodynamic journal bearing remains floating on the oil film. [IES-2008] Reason (R): The hydrodynamic pressure developed in steady rotating conditions in journal ... A (c) A is true but R is false (d) A is false but R is true

Last Answer : (a) Both A and R are true and R is the correct explanation of A

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Description : A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Last Answer : (b) Alkaline

How to find the potential difference across a battery in a series parallel circuit with resistors that have no value given?

Description : How to find the potential difference across a battery in a series parallel circuit with resistors that have no value given?

Last Answer : The potential difference is obtthe difference of all voltage across a terminal. From the circuit above I think the resistors are in series and parallel to each other. The two resistors in line CB are ... place the multimeter in series with the circuit and you will get the resistance. But ise you

A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))`

Description : A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))`

Last Answer : A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))` A. `-1V` B. `+1V` C. `-2V` D. `+2V`

A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))`

Description : A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))`

Last Answer : A current of `2 A` flows in a system of conductor as shown. The potential difference `(V_(A) - V_(B))` A. `+1V` B. `-1V` C. `+2V` D. `-2V`

A cross a metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity which remain (s) constant along th

Description : A cross a metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity which remain (s) constant along th

Last Answer : A cross a metallic conductor of non-uniform cross-section, a constant potential difference is applied ... current C. drift velocity D. electric field

The slope of the graph showing the variation of potential difference V on X-axis and current Y-axis gives conductor

Description : The slope of the graph showing the variation of potential difference V on X-axis and current Y-axis gives conductor

Last Answer : The slope of the graph showing the variation of potential difference V on X-axis and ... resistivity C. reciprocal of resistance D. conductivity

The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro's law (2) Rault's law (3) Ohms law (4) Faraday's law

Description : The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro's law (2) Rault's law (3) Ohms law (4) Faraday's law

Last Answer : (3) Ohms law Explanation: According to Ohm's Law, the potential difference (V) between two terminals of a current-carrying conductor is directly proportional to the current (I), flowing through it. -For any Study materialContact WhatsApp: 8337932441 Join Telegram- Click here

The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law

Description : The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law

Last Answer : Ohms law

The sensation of weightlessness in a spacecraft in an orbit is due to the – (1) Absence of gravity outside (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside (3) Presence of gravity outside but not inside the spacecraft (4) Fact that spacecraft in the orbit has no energy

Description : The sensation of weightlessness in a spacecraft in an orbit is due to the - (1) Absence of gravity outside (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside ... of gravity outside but not inside the spacecraft (4) Fact that spacecraft in the orbit has no energy

Last Answer : (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside Explanation: Weightlessness in space is caused by the simple physical factors that cause the limitation of gravity. ... . Many people believe that a lack of gravity is the root cause for weightlessness in space.

The sensation of weightlessness in a spacecraft in an orbit is due to the – (1) Absence of gravity outside (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside (3) Presence of gravity outside but not inside the spacecraft (4) Fact that spacecraft in the orbit has no energy

Description : The sensation of weightlessness in a spacecraft in an orbit is due to the - (1) Absence of gravity outside (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside ... of gravity outside but not inside the spacecraft (4) Fact that spacecraft in the orbit has no energy

Last Answer : (2) Acceleration in the orbit which is equal to the acceleration due to gravity outside Explanation: Weightlessness in space is caused by the simple physical factors that cause the limitation of gravity. ... . Many people believe that a lack of gravity is the root cause for weightlessness in space.

The sensation of weightlessness in a spacecraft in an orbit is due to the (1) absence of gravity outside (2) acceleration in the orbit which is equal to the acceleration due to gravity outside (3) presence of gravity outside but not inside the spacecraft (4) fact that spacecraft in the orbit has no energy

Description : The sensation of weightlessness in a spacecraft in an orbit is due to the (1) absence of gravity outside (2) acceleration in the orbit which is equal to the acceleration due to gravity outside (3 ... of gravity outside but not inside the spacecraft (4) fact that spacecraft in the orbit has no energy

Last Answer :  acceleration in the orbit which is equal to the acceleration due to gravity outside

Which of the following describes the given graph correctly? Potential energy Reaction Product Substrate B A (a) Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (b) Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (c) Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme. (d) Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme.

Description : Which of the following describes the given graph correctly? Potential energy Reaction Product Substrate B A (a) Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (b) ... . (d) Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme.

Last Answer : (b) Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme

Assertion : If a current flows through a wire of non-uniform cross-section, potential difference per unit length of wire is same throughout the length

Description : Assertion : If a current flows through a wire of non-uniform cross-section, potential difference per unit length of wire is same throughout the length

Last Answer : Assertion : If a current flows through a wire of non-uniform cross-section, potential difference per ... . If Assertion is false but Reason is true.

Find the mobility of the conduction electrons in a copper conductor if in Hall effect measuremaents performed in the magnetic fileld of induction `B =

Description : Find the mobility of the conduction electrons in a copper conductor if in Hall effect measuremaents performed in the magnetic fileld of induction `B =

Last Answer : Find the mobility of the conduction electrons in a copper conductor if in Hall effect measuremaents ... than that of the longtudinal electric field.

What is the drift velocity of electrons in a copper conductor having a cross-sectional area of `5xx10^(-6) m^(2)` if the current is 10 A. Assume there

Description : What is the drift velocity of electrons in a copper conductor having a cross-sectional area of `5xx10^(-6) m^(2)` if the current is 10 A. Assume there

Last Answer : What is the drift velocity of electrons in a copper conductor having a cross-sectional area of `5xx10^(-6) m^( ... `8.0xx10^(28) "electrons"//m^(3)`.

Which of the follwing characteristies of electrons determines the current in a conductor?

Description : Which of the follwing characteristies of electrons determines the current in a conductor?

Last Answer : Which of the follwing characteristies of electrons determines the current in a conductor? A. Drift ... velocity D. Neither drift nor thermal velocity

When electrons flow with Little resistance through a conductor it is called a?

Description : When electrons flow with Little resistance through a conductor it is called a?

Last Answer : n word pass

What makes electrons move through a conductor in only one direction?

Description : What makes electrons move through a conductor in only one direction?

Last Answer : What is the answer ?

Electric current is the flow of electrons through a conductor; the rate of this flow is measured in ___________. A. volts B. amperes C. coulombs D. ohms

Description : Electric current is the flow of electrons through a conductor; the rate of this flow is measured in ___________. A. volts B. amperes C. coulombs D. ohms

Last Answer : Answer: B

Electric current is the flow of electrons through a conductor. The rate of this flow is measured as ___________. A. volts/watt B. amperes/centimetre C. coulombs/second D. ohms/volt

Description : Electric current is the flow of electrons through a conductor. The rate of this flow is measured as ___________. A. volts/watt B. amperes/centimetre C. coulombs/second D. ohms/volt

Last Answer : Answer: C

The force that causes free electrons to move in a conductor as electric current flow is called a/an _____________. A. resistant force B. electromotive force C. inductive force D. dielectric force

Description : The force that causes free electrons to move in a conductor as electric current flow is called a/an _____________. A. resistant force B. electromotive force C. inductive force D. dielectric force

Last Answer : Answer: B

________ is an electric noise produced by thermal agitation of electrons in conductor and semiconductor. A. External noise B. Internal noise C. Thermal noise D. Flicker

Description : ________ is an electric noise produced by thermal agitation of electrons in conductor and semiconductor. A. External noise B. Internal noise C. Thermal noise D. Flicker

Last Answer : C. Thermal noise

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons. (A) Lack of free (B) Excess of (C) Decrease in (D) None of these

Description : A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons. (A) Lack of free (B) Excess of (C) Decrease in (D) None of these

Last Answer : (B) Excess of

Forward current through a semi-conductor diode circuit is due to ________ (a) Minority carriers (b) majority carriers (c) holes (d) electrons

Description : Forward current through a semi-conductor diode circuit is due to ________ (a) Minority carriers (b) majority carriers (c) holes (d) electrons

Last Answer : (b) majority carriers

In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the polarity as indicated. The ratio of potential difference acro

Description : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the polarity as indicated. The ratio of potential difference acro

Last Answer : In the circuit shown the voltage drop across the `15Omega` resistor is `30 V` having the ... difference across `5Omega` and resistance `R` is

The potential difference across the membrane of a relaxed muscle fiber is called resting potential. It amounts to about

Description : The potential difference across the membrane of a relaxed muscle fiber is called resting potential. It amounts to about

Last Answer : The potential difference across the membrane of a relaxed muscle fiber is called resting potential. It amounts to ... C. `100m V` D. `50- 100mV`

A potential difference of V = 100 ± 2 volt, when applied across a resistance R gives a current of 10 ± 0.5 ampere.

Description : A potential difference of V = 100 ± 2 volt, when applied across a resistance R gives a current of 10 ± 0.5 ampere.

Last Answer : A potential difference of V = 100 2 volt, when applied across a resistance R gives a current of 10 ... percentage error in R given by R = V/I.

The potential difference across a cell is 1.8 V when a current of 0.5 A is drawn from it. The p.d. falls to 1.6 V when a current of 1.0 A is drawn. Fi

Description : The potential difference across a cell is 1.8 V when a current of 0.5 A is drawn from it. The p.d. falls to 1.6 V when a current of 1.0 A is drawn. Fi

Last Answer : The potential difference across a cell is 1.8 V when a current of 0.5 A is drawn from it. ... . Find the emf and the internal resistance of the cell.