Current Electricity-Electrical Resistance (BITSAT Physics): Questions 1 - 3 of 3

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Question number: 1

» 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: 2

» Current Electricity » Electrical Resistance

MCQ▾

Question

The resistance of a Equation long wire is Equation . The wire is stretched to form a uniform wire of Equation length. The resistance now will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Current Electricity » Electrical Resistance

MCQ▾

Question

If a copper wire is stretched to make its radius decrease Equation , then change in its resistance is approximately,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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