Current Electricity (BITSAT Physics): Questions 1 - 4 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 Equation , then power will change by –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Current Electricity » Electric Current

MCQ▾

Question

When the key K is pressed at time Equation , then which of the following statement about the current Equation in the resistor Equation 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.

Equation oscillates between Equation and Equation

b.

Equation at all Equation

c.

At Equation and with time it goes to Equation

d.

Equation and at all Equation .

Question number: 3

» Current Electricity » Electrical Resistance

MCQ▾

Question

When current flows in a conductor, then the ratio of the intensity of electric field Equation 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 Equation is covered with ice and a voltage of Equation is applied across the wire then rate of melting of ice will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

All of the above

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