Electrostatics-Capacitors (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 3 of 5

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Question number: 1

» Electrostatics » Capacitors

Appeared in Year: 2012

MCQ▾

Question

The capacitor of capacitance C in the circuit shown is fully charged initially, Resistance is R.

Circuit diagram of resistance and capacitor

Circuit Diagram of Resistance and Capacitor

In figure RC circuit diagram is shown.

After the switch S is closed, the time taken to reduce the stored energy in the capacitor to half its initial value is:

Choices

Choice (4) Response
a.

Cln 2

b.

2RCln2

c.

RCln22

d.

RC2

Question number: 2

» Electrostatics » Capacitors

MCQ▾

Question

Three identical parallel plate capacitors of capacitance 2 µF each are connected in series with a battery of emf, 10 V as shown. Q is the charge on the capacitor. If two of the capacitors are now filled with a dielectric of dielectric constant k, the amount of charge which will flow through the battery is (neglect internal resistance of the battery)

Circuit diagram of three capacitors and a battery

Circuit Diagram of Three Capacitors and a Battery

In figure a circuit diagram consist of three capacitors and a battery is shown.

Choices

Choice (4) Response
a.

Q2(k1)(k+1)

b.

Q(k1k+2)

c.

Q(k+2k2)

d.

2Q(k1)(k+2)

Question number: 3

» Electrostatics » Capacitors

Appeared in Year: 2014

MCQ▾

Question

What are the charges stored in the 1 µF and 2 µF capacitors in the circuit below, once the currents become steady?

Combination of resistors and capacitors

Combination of Resistors and Capacitors

Figure shows a circuit diagram of combination of resistors and capacitors.

Choices

Choice (4) Response
a.

4 µC and 8 µC respectively

b.

3 µC and 6 µC respectively

c.

8 µC and 4 µC respectively

d.

6 µC and 3 µC respectively

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