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Question 1 of 10
1. Question
If the potential difference between the plates of a capacitor is increased by 0.1%, the energy stored in the capacitor increases by very nearly
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Question 2 of 10
2. Question
Three capacitors connected in series have an effective capacitance of 2 μF. If one of the capacitors is removed, the effective capacitance becomes 3 μF. The capacitance of the capacitor that is removed is
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Question 3 of 10
3. Question
A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. The potential difference between the surface of the solid sphere and the outer surface of the hollow shall is V. If the shell is now given a charge of -3Q, the new potential difference between the same two surfaces is
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Question 4 of 10
4. Question
Two identical thin rings, each of radius R are coaxially placed at a distance R apart. If Q1 and Q2 are the charges uniformly spread on the two rings, the work done in moving a charge q from the centre of one ring to the centre of the other is
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Question 5 of 10
5. Question
An electron of mass m(e), initially at rest, moves through a certain distance in a uniform electric field in time t1. A proton of mass m(p),, also initially at rest, takes time t2 to move through an equal distance in this uniform electric field. Neglecting the effect of gravity, the ratio t2/t1 is nearly equal to
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Question 6 of 10
6. Question
A parallel plate capacitor of capacitance 5 μF and plate separation 6 cm is connected to a 1 V battery and charged. A dielectric of dielectric constant 4 and thickness 4 cm is introduced between the plates of the capacitor. The additional charge that flows into the capacitor from the battery is
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Question 7 of 10
7. Question
A parallel plate capacitor is maintained at a certain potential difference. When a dielectric slab of thickness 3 mm is introduced between the plates, the plate separation had to be increased by 2 mm in order to maintain the same potential difference between the plates. The dielectric constant of the slab is
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Question 8 of 10
8. Question
A capacitor of capacitance C1 = C is charged to a voltage V. It is then connected in parallel with a series combination of two uncharged capacitors of capacitances C2 = C and C3 = C. The charge that will flow through the connecting wires is
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Question 9 of 10
9. Question
The equivalent capacitance between points A and B in the network shown in Fig. is (C1 = 2 μF and C2 = 3μF)
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Question 10 of 10
10. Question
One plate of a parallel plate capacitor of plate area A and plate separation d is connected to the positive terminal to a battery of the voltage V. The negative terminal of the battery and the other plate of the capacitor are earthed as shown in Fig. The charge that flows from the battery to the capacitor plates is
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