What is ohm's law ? -Physics

1 Answer

Answer :

If the temperature remains constant, the current flowing through the conductor is directed proportional to the Potential difference across the circuit. V ∝ I

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Description : What does OHM's law state? -Physics-10

Last Answer : Ohm's Law given by Georg Ohm states that, at constant temperature, the Potential Difference is directly proportional to the Electric Current. Formula: V = IR

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

Description : Ohm's law is valid in case of – (1) semiconductor (2) conductor (3) superconductor (4) insulator

Last Answer : (2) conductor Explanation: Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. It defines the relationship between the three fundamental, electrical quantities: current, voltage, and resistance.

Description : Ohm’s law obeyed in - (1) a metallic conductor (2) a semi conductor (3) an electron tube (4) in all of the above

Last Answer : (1) a metallic conductor Explanation: There are, however, components of electrical circuits which do not obey Ohm's law; that is, their relationship between current and voltage (their I–V curve) is nonlinear (or non-ohmic).

Description : Ohm's law defines – (1) a resistance (2) current only (3) voltage only (4) both current and voltage

Last Answer : (1) a resistance Explanation: Ohm's law a law relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current.

Description : Which one of the following laws best describes the operation of an electric generator? w) Ampere's Law x) Gauss' Law y) Ohm's Law for Conductors z) Faraday's Law of Induction

Last Answer : ANSWER: Z -- FARADAY'S LAW OF INDUCTION 

Description : What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law

Last Answer : ANSWER: X -- COULOMB'S LAW

Description : Induced electric currents can be explained using which of the following laws? w) Gauss's Law x) Faraday's Law y) Ohm's Law z) Ampere's Law

Last Answer : ANSWER: X -- FARADAY'S LAW

Description : The force acting between two point charges can be computed using which of the following laws? w) Ohm's Law x) Ampere's Law y) Coulomb's Law z) Newton's Second Law.

Last Answer : ANSWER: Y -- COULOMB'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

Description : Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator

Last Answer : conductor

Description : Do you think in another solar system it would be possible for there to be no law of physics there or at least a completely different law of physics?

Last Answer : No. We can observe lots of different solar systems, and there’s no evidence of that being so.

Description : How do I use Ohm's law to show that power can be expressed by the equation P=I^2R?

Last Answer : Are you allowed to also use the relationship that P=IV? Because given that equation, it is then just a matter of simple replacement. V=IR (Ohm’s law), so replace the V in the first equation with IR to get P=I^2R.

Description : In which year did G.S. Ohm formulate Ohm’s law?

Last Answer : Answer: 1827.

Description : What does Ohm's law describe the mathematical relationship between?

Last Answer : It describes the relation between voltage, current and theresistance of the circuit.

Description : Is ohm's law an universal law?

Last Answer : Ohm's Law is basically just the definition of resistance. Thatdoesn't make it very "universal", no matter how you choose todefine "universal".However, it's very useful for electricalcalculations.

Description : Is ohms law verified for the open circuits?

Last Answer : For an open circuit, you basically have an infinite resistance,and zero current. This can be considered a special case of Ohm'slaw.

Description : The law that finds application in electrolysis is: a) Faraday's law b) Coulomb's law c) Ohm's law d) Lenz's law

Last Answer : Ans: A

Description : If reading AC current with the illustrated device and unsure of the range as a precaution , the first step should be to _________. EL-0047 A. secure power and test for voltage B. disconnect the ... resistance and use Ohm's law to calculate current D. unable to safely measure current with the device

Last Answer : Answer: A

Description : What does Ohm's Law states?

Last Answer : In a closed electrical circuit, current is directly proportional to voltage and inversely proportional to resistance at constant temperature.   I= V/R. Where I= Current, V= Voltage & R= Resistance  

Description : What is ohm’s law for AC circuit?

Last Answer : I = V/Z amps. Z = V/I ohms. V = I * Z volts.

Description : State the Ohm’s law.  

Last Answer : In a closed electrical circuit, at a constant temperature, the ratio between the resulting unvarying current or direct current and applied voltage is a constant. That constant is known as resistance. OR In simple manner Ohm's law ... the resistance of the circuit. I = V/R or R = V/I or E = IR. 

Description : On equating the generic form of current density equation and the point form of Ohm’s law, we can obtain V=IR. State True/False. a) True b) False

Last Answer : a) True

Description : The continuity equation is a combination of which of the two laws? a) Ohm’s law and Gauss law b) Ampere law and Gauss law c) Ohm’s law and Ampere law d) Maxwell law and Ampere law

Last Answer : b) Ampere law and Gauss law

Description : With Gauss law as reference which of the following law can be derived? a) Ampere law b) Faraday’s law c) Coulomb’s law d) Ohm’s law

Last Answer : c) Coulomb’s law

Description : Mention any four precautions while doing an experiment to verify Ohm’s law?

Last Answer : Answer. All connections should be kept tight. The zero error in the ammeter and voltmeter should be noted down and taken into consideration while reading the measurement. The bare ends of the ... current through the circuit should be kept as low as possible otherwise heating of the resistor occurs.

Description : Suppose the ammeter or voltmeter you are using in the Ohm’s law experiment does not have +ve and –ve terminal markings. How will you use such ammeter or voltmeter in the circuit?

Last Answer : Answer. We will use a typical battery to determine this. Connect them with wire and the battery if their readings are positive then we have connected them correctly and if their readings in negative then we have connected in opposite polarity.

Description : If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the ... (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above

Last Answer : (a) Kelvin's law

Description : According to Ohm’s law, what happens to circuit current if circuit resistance (a) increases, (b) decreases?

Last Answer : (a) Current decreases (b) Current increases

Description : According to Ohm’s law, what happens to circuit current if the applied voltage (a) increases, (b) decreases?

Last Answer : (a) Current increases (b) Current decreases

Description : “The direction of induced current is always so as to oppose the change which causes the Current” is the statement of: a. Faraday’s law b. Lenz’s Law c. Ohm’s Law d. Kirchoff’s rule.

Last Answer : c. Ohm’s Law

Description : The graphical representation of Ohms law is a. hyperbola b. Ellipse c. parabola d. straight line

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Description : 27] In a transformer, the leakage flux of each winding is proportional to the current in that winding because A. Ohm's law applies to magnetic circuits B. Leakage paths do no saturate C. the two windings are electrically isolated D. mutual flux is confined to the core

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Description : State Ohm’s law for electric circuit.

Last Answer : Ohms law -States that the current flows in a circuit is directly proportional to the applied voltage (V) and inversely the proportional resistance provided with the temperature main constant

Description : Does the linear circuit obey Ohm's law?

Last Answer : Yes linear circuit obey Ohm's law and nonlinear circuit not satisfied Ohm's law.

Description : State and explain Ohm’s law.

Last Answer : Ans: Ohm's law: As long as physical conditions (such as dimensions, pressure and temperature) are constant, the potential difference or voltage applied across the conductor is directly proportional to ... V/R where, R = constant of proportionality, called as the resistance of the conductor.

Description : According to Ohm's law:  (1) The voltage is constant to current (2) The voltage is proportional to current (3) Voltage is inversely proportional to current (4) The voltage is proportional to resistance

Last Answer : At constant temperature current passing through a conductor is directly proporstional to voltage across a conductor

Last Answer : Ohm's law is not applicable to semi-conductors.

Last Answer : If the resistance of a conductor does not vary in accordance with Ohm's law it is known as non-linear conductor

Description : About trnsformer

Last Answer : Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer

Description : why ohm's law is not applicable for ac circuit?

Last Answer : We can use Ohm's law for AC circuit if circuit consists of linear components and devices.

Description : does ohm's law apply to ac circuits?

Last Answer : Yes it does, but as it is supplied with ac we will have to take impedance in account.

Description : is Ohms law applicable to vacuum tubes?

Last Answer : Ohm's law is not applicable to vacuum tubes.

Description : What is Ohm's formula ?

Last Answer : The formula is: If temperature and other physical conditions remain unchanged , the current flowing through a conductor is proportional to the potential difference between the two ends of that conductor.

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Description : A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms

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Description : An LED is operated on a 12 volt automobile circuit. The voltage drop across the LED is 2 volts and the current must be limited to 50 milliamps to prevent its overheating and destruction. What size resistor must be used? w) 60 ohms x) 100 ohms y) 120 ohms z) 200 ohms

Last Answer : ANSWER: Z -- 200 OHMS

Description : A circuit has a resistance of 200 ohms. The resistance of the circuit can be reduced to 120 ohms by adding which of the following to the circuit. w) 80 ohm resistor in series x) 150 ohm resistor in parallel y) 240 ohm resistor in series z) 300 ohm resistor in parallel

Last Answer : ANSWER: Z -- 300 OHM RESISTOR IN PARALLEL

Description : Electric current may be expressed in which one of the following units? w) coulombs/volt x) joules/coulomb y) coulombs/second z) ohms/second

Last Answer : ANSWER: Y -- COULOMBS/SECOND