Current Electricity [BITSAT (Birla Institute of Technology & Science Admission Test) Physics]: Questions 1 - 6 of 27

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Question 1

Current Electricity

Question

MCQ▾

If current flowing in a conductor changes by , then power will change by –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 2

Current Electricity

Question

MCQ▾

When the key K is pressed at time , then which of the following statement about the current in the resistor of the given circuit is true?

Choices

Choice (4)Response

a.

oscillates between and

b.

At and with time it goes to

c.

at all

d.

and at all .

Question 3

Current Electricity

Question

MCQ▾

When current flows in a conductor, then the ratio of the intensity of electric field at any point within the conductor and the current density at a point is called –

Choices

Choice (4)Response

a.

Inductance

b.

Specific resistance

c.

Resistance

d.

Conductance

Question 4

Question

MCQ▾

If a wire of resistance is covered with ice and a voltage of is applied across the wire then rate of melting of ice will be –

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question 5

Current Electricity

Question

MCQ▾

electric heater operates on a line, then the rate at which it develops heat in watts will be –

Choices

Choice (4)Response

a.

670

b.

1310

c.

810

d.

1210

Question 6

Current Electricity

Question

MCQ▾

Two identical batteries, each of emf and internal resistance by passing a current through it. The maximum power that can be developed across using these batteries is –

Choices

Choice (4)Response

a.

b.

c.

d.

Developed by: