Current Electricity (BITSAT Physics): Questions 1 - 5 of 27

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Question number: 1

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2

» Current Electricity » Electric Current

MCQ▾

Question

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

Circuit Diagram of Two Resistors and a Capacitor

In figure a circuit diagram of two resistors and a capacitor is shown.

Choices

Choice (4) Response

a.

oscillates between and

b.

at all

c.

At and with time it goes to

d.

and at all .

Question number: 3

» Current Electricity » Electrical Resistance

MCQ▾

Question

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 number: 4

» Current Electricity » Temperature Dependence of Resistance

MCQ▾

Question

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.

All of the above

Question number: 5

» Current Electricity » Electrical Energy and Power

MCQ▾

Question

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.

810

c.

1210

d.

1310

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