Current Electricity-Electrical Resistance [BITSAT (Birla Institute of Technology & Science Admission Test) Physics]: Questions 1 - 3 of 3

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Question 1

Electrical Resistance

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 2

Electrical Resistance

Question

MCQ▾

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question 3

Electrical Resistance

Question

MCQ▾

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

Choices

Choice (4)Response

a.

b.

c.

d.

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