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?

Circuit Diagram of Two Resistors and a Capacitor

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 –

A Circuit Diagram Three Resistors and Two Batteries

Choices

Choice (4)Response

a.

b.

c.

d.

Developed by: