Electrostatics (KVPY (Kishore Vaigyanik Protsahan Yojana) 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.

b.

c.

d.

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.

b.

c.

d.

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.

b.

c.

d.

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