Description : A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is: w) 2 x 10-2 farads x) 5 x 10-2 farads y) 2 farads z) 5 farads
Last Answer : ANSWER: X -- 5 x 10-2 FARADS
Description : Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x ... y) The capacitance of the system depends on the voltage applied across the three capacitors.
Last Answer : ANSWER: X -- THE MAGNITUDE OF THE CHARGE IS THE SAME ON ALL OF THE CAPACITOR PLATES
Description : A two farad and a four farad capacitor are connected in parallel. What single capacitance is "equivalent" to this combination?
Last Answer : ANSWER: 6 FARADS
Description : If a three farad capacitor and a six farad capacitor are connected in parallel, what is their equivalent capacitance?
Last Answer : ANSWER: 9 FARADS
Description : A two farad and a four farad capacitor are connected in series. What single capacitance is "equivalent" to this combination?
Last Answer : ANSWER: 4/3 FARADS
Description : If charge stored on plates of capacitor is large, then capacitance will be A. small B. large C. zero D. infinite
Last Answer : large
Description : If a capacitance is charged by a square wave current source, then the voltage across the capacitor will be (a) Square wave (b) Step function (c) Triangular wave (d) Zero
Last Answer : If a capacitor is charged by a square wave current source, the voltage across the capacitor is : triangular wave
Description : Three equal resistors connected in series across a source of emf together dissipate 10 watts of power. What would be the power dissipated in the same resistors when they are connected in parallel across the same source of emf?
Last Answer : Three equal resistors connected in series across a source of emf together dissipate 10 watts of power. 90 watts would be the power dissipated in the same resistors when they are connected in parallel across the same source of emf.
Description : An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor of the circuit is : (A) 100/11 (B) 11/100 (C) 110 (D) 1000
Last Answer : An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor of the circuit is : 100/11
Description : The whole question did not fit into my assignment .. I would be grateful if you could help me. What is the intensity of the electric field at a distance of 30 Cm and a point of charge 3x10na -6 C. How much force will act on the particle carrying the elementary charge?
Last Answer : Need Answer
Description : A long solenoid carrying a current I is placed with its axis vertical as shown in the figure. A particle of mass m and charge q is released from the t
Last Answer : A long solenoid carrying a current I is placed with its axis vertical as shown in the figure. A particle of ... than g C. equal to g D. None of these
Description : The value of the capacitance depends upon the________________? A.voltage applied B. thickness of the capacitor plates C. geometry of the capacitor D. dinsity of the capacitor plates
Last Answer : Ans: C
Description : In the illustrated circuit, one advantage of the capacitor coupling over direct coupling is ____________. EL-0048 A. as the frequency decreased the capacitive reactance (Xc) increases B. the amplifier becomes ... of the signal while it isolates the biasing of each stage. D. good frequency response.
Last Answer : Answer: C
Description : Capacitance in an AC circuit will _____________. A. stop current flow once the capacitor is fully charged B. allow current flow in only one direction C. oppose any change in circuit voltage D. rectify the current
Description : Total capacitance of 300 mF capacitor and a 600 mF in series isA. 300 mF B. 500 mF C. 200 mF D. 1000 mF
Last Answer : 200 mF
Description : Find the time constant of a capacitor with capacitance of 2 microfarad having an internal resistance of 4 megaohm. a) 2 b) 0.5 c) 8 d) 0.25
Last Answer : c) 8
Description : State three factors that affect the capacitance of a capacitor.
Last Answer : a. The area of the plates. b. The distance between the plates. c. The dielectric constant of the material between the plates.
Description : Reduction in the capacitance of a capacitor-start motor, results in reduced (A) Noise. (B) Speed. (C) Starting torque. (D) Armature reaction.
Last Answer : Ans: C Reduction in the capacitance reduces starting voltage, which results in reduced starting torque.
Description : The length of both sides of a square parallel plate capacitor are doubled. The capacitance is: w) halved x) the same y) doubled z) quadrupled
Last Answer : ANSWER: Z -- QUADRUPLED
Description : For a parallel-plate capacitor with plate area "A" and plate separation "d", the capacitance is proportional to which of the following? w) A divided by d squared x) A times d y) A divided by d z) d divided by A
Last Answer : ANSWER: Y -- A DIVIDED BY D
Description : The capacitance of the capacitor is directly proportional to the
Last Answer : The capacitance of the capacitor is directly proportional to the Area of the plate
Description : A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser?
Last Answer : A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser? 1 joule
Description : What happens to the capacitance if mica is inserted between the plates of an air capacitor? A) The capacitance increases B) The capacitance decreases C) The capacitance remains the same D) The capacitance becomes zero
Last Answer : What happens to the capacitance if mica is inserted between the plates of an air capacitor? A) The capacitance increases B) The capacitance decreases C) The capacitance remains the same D) The capacitance becomes zero
Description : What is the capacitance when a capacitor passes a current of 31.43 mA when supplied with 40 V AC with a frequency of 1000 Hz? A) 0.125 F B) 0.125 μF C) 1257.2 μF D) None of these
Last Answer : What is the capacitance when a capacitor passes a current of 31.43 mA when supplied with 40 V AC with a frequency of 1000 Hz? A) 0.125 F B) 0.125 μF C) 1257.2 μF D) None of these
Description : Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these
Last Answer : Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these
Description : With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?
Last Answer : With the help of Schering bridge are the capacitance and dielectric loss of a capacitor generally measured.
Description : Reduction in the value of capacitance of a capacitor -start motor, results in reduced: (A) noise (B) speed (C) starting torque (D) armature reaction
Last Answer : A
Description : An ideal voltage source will charge an ideal capacitor A) in infinite time B) exponentially C) instantaneously D) cannot be guessed
Last Answer : An ideal voltage source will charge an ideal capacitor instantaneously
Description : A small group of people are all standing around a two-foot tall, empty, wooden container. Two women approach the group carrying a silver container, which they place inside the wooden container. No ... circular motions. After this, the top of the silver container is removed, and an objec -Riddles
Last Answer : This group was making home made ice cream using an old fashioned hand-cranked ice cream freezer.
Description : A cell of emf E and internal resistance r is connected in series with an external resistance nr. Than what will be the ratio of the terminal potential
Last Answer : A cell of emf E and internal resistance r is connected in series with an external resistance nr. Than what will be the ... /(n + 1)` D. `(n + 1)/n`
Description : Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external
Last Answer : Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, ... (3r+R)` D. `(2E)/(3r+R)`
Description : A battery of emf E has an internal resistance r. A variable resistacne R is connected to the terminals of the battery. A current `i` is drawn from the
Last Answer : A battery of emf E has an internal resistance r. A variable resistacne R is connected to the terminals of ... infinity, `(E)/(r)`, V approaches E
Description : The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be
Last Answer : The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, ... /(3r)` D. `(E^(2))/(4r)`
Description : There are n cells, each of emf E and internal resistance r, connected in series with an external resistance R. One of the cells is wrongly connected,
Last Answer : There are n cells, each of emf E and internal resistance r, connected in series with an external resistance R. One of the ... D. `((n-2)E)/((n-2)r+R)`
Description : Refers to an ac bridge for measuring the inductance and Q of an inductor in terms of resistance, frequency and a standard capacitance.
Last Answer : hay bridge
Description : Three identical cells each of emf 2 V and unknown internal resistance are connected in parallel. This combination is connected to a `5 Omega` resistor
Last Answer : Three identical cells each of emf 2 V and unknown internal resistance are connected in parallel. ... what is the internal resistance of each cell ?
Description : Three identical, each of emf 2 V and internal resistance `0.2 Omega` are connected in series to an external resistor of `7.4 Omega`. Calculate the cur
Last Answer : Three identical, each of emf 2 V and internal resistance `0.2 Omega` are connected in series to ... 7.4 Omega`. Calculate the current in the circuit.
Description : Two cells of emf of 1.5 V and 2.0 V having internal resistances of `1 Omega` and `2 Omega`, respectively are connected in parallel so as to send curre
Last Answer : Two cells of emf of 1.5 V and 2.0 V having internal resistances of `1 Omega` and `2 Omega` ... of `5 Omega`. Find the current in the external circuit.
Description : 10 cells, each of internal resistance `0.5 Omega` and 1.2 V emf are connected (a) all in series and (b) all in paralle. Calculate the current sent in
Last Answer : 10 cells, each of internal resistance `0.5 Omega` and 1.2 V emf are connected (a) all in ... each case through a wire of resistance `0.8 Omega`.
Description : A battery of emf 2 V and internal resistance `0.5 Omega` is connected across a resistance of `9.5 Omega`. How many electrons pass through a cross-sect
Last Answer : A battery of emf 2 V and internal resistance `0.5 Omega` is connected across a resistance of `9. ... a cross-section of the resistance in 1 second ?
Description : The potential differnce between the terminals of a battery of emf 6.0 V and internal resistance `1 Omega` drops to 5.8 V when connected across an exte
Last Answer : The potential differnce between the terminals of a battery of emf 6.0 V and internal resistance ... resistor . Find the resistance of the external res
Description : An electron in potentiometer experiences a force `2.4xx10^(-19)N`. The length of potentiometer wire is 6m. The emf of the battery connected across the
Last Answer : An electron in potentiometer experiences a force `2.4xx10^(-19)N`. The length of potentiometer wire is 6m. The emf of ... 6 V B. 9 V C. 12 V D. 15 V
Description : 24 cells of emf `1.5 V` each having internal resistance of 1 ohm are connected to an external resistance of `1.5` ohms. To get maximum current,
Last Answer : 24 cells of emf `1.5 V` each having internal resistance of 1 ohm are connected to an external ... in series and 4 such rows are connected in parallel
Description : Two resistors of resistances `2Omega` and `6Omega` are connected in parallel. This combination is then connected to a battery of emf 2 V and internal
Last Answer : Two resistors of resistances `2Omega` and `6Omega` are connected in parallel. This combination is then connected to a ... . `(4)/(17)A` D. `1 A`
Description : Four identical cells of emf `epsilon` and internal resistance r are to be connected in series. Suppose, if one of the cell is connected wrongly, then
Last Answer : Four identical cells of emf `epsilon` and internal resistance r are to be connected in series. Suppose, if one of ... and 4r C. 2E and 2r D. 4E and 2r
Description : A potentiometer wire of length `100 cm` having a resistance of `10 Omega` is connected in series with a resistance `R` and a cell of emf `2V` of negli
Last Answer : A potentiometer wire of length `100 cm` having a resistance of `10 Omega` is connected in series with a ... Omega` C. `790 Omega` D. `840 Omega`
Description : `B_(1), B_2 and B_3` are the three identical bulbs connected to a battery of steady emf with key `K` closed. What happens to the brightness of the bul
Last Answer : `B_(1), B_2 and B_3` are the three identical bulbs connected to a battery of steady emf with key `K` ... of the bulbs `B_(1)` and `B_(2)` decreases
Description : Two nonideal batteries are connected in parallel. Consider the following statements: (A)The equivalent emf is smaller than either of the two emfs. (B)
Last Answer : Two nonideal batteries are connected in parallel. Consider the following statements: (A)The equivalent emf is ... wrong D. Both A and B are correct
Description : Two batteries of emf `epsilon_(1)` and `epsilon_(2) (epsilon_(2)gtepsilon_(1)` and internal resistances `r_(1)` and `r_(2)` respectively are connected
Last Answer : Two batteries of emf `epsilon_(1)` and `epsilon_(2) (epsilon_(2)gtepsilon_(1)` and internal resistances ... internal resistances `r_(1)` and `r_(2)`