Electrostatics (KVPY Stream-SA (Class 11) Physics): Questions 9 - 13 of 15

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Question number: 9

» Electrostatics » Capacitors

MCQ▾

Question

When a capacitor is connected to a battery,

Choices

Choice (4) Response

a.

There is no flow of current

b.

The current keeps on increasing, reaching a maximum value until the capacitor is fully charged.

c.

A varying current keeps on flowing in the circuit

d.

Initially a current flow in the circuit and then decreases to zero

Question number: 10

» Electrostatics » Capacitors

MCQ▾

Question

50 sheets of mica, each of thickness 0.1 mm are interspersed with aluminum foils of area 40 cm2. The metal sheets are connected alternately to form a system of capacitors. The capacitance of the capacitor is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 11

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

27 identical water drops, carrying equal charge q and having the same potential V, merge together. The energy of the new drop is given as,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 12

» Electrostatics » Coulomb's Law

MCQ▾

Question

The excess (equal in number) of electrons that must be placed on each of two small sphered 4.8 cm apart with force of repulsion between sphere to be 1.6 ⨯ 10-20 N, is –

Choices

Choice (4) Response

a.

400

b.

350

c.

275

d.

250

Question number: 13

» Electrostatics » Electric Potential

MCQ▾

Question

8 identical water drops, carrying equal charge q and having the same potential V, merge together. The potential of the new water drop is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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