Experimental Skills-Potentiometer (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 6 - 8 of 8

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Question number: 6

» Experimental Skills » Potentiometer

MCQ▾

Question

A potentiometer works on the principle that

Choices

Choice (4) Response

a.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is inversely proportional to the length of the wire between the points

b.

when a current flows through a wire of uniform thickness and material, potential difference between its two points doesn’t depend on the length of the wire between the points

c.

when a current flows through a wire of uniform thickness and material, potential difference between its two points is directly proportional to the length of the wire between the two points

d.

All of the above

Question number: 7

» Experimental Skills » Potentiometer

MCQ▾

Question

Which of the following operations will not increase the sensitivity of a potentiometer?

Choices

Choice (4) Response

a.

Increase in the number of wires of the potentiometer.

b.

Reducing the potential gradient.

c.

Increasing the sensitivity of the galvanometer.

d.

Increasing the current through the potentiometer

Question number: 8

» Experimental Skills » Potentiometer

Appeared in Year: 2017

MCQ▾

Question

A potentiometer is an accurate and versatile device to make electrical measurements of E. M. F. because the method involves:

Choices

Choice (4) Response

a.

Cell

b.

A combination of cells, galvanometer and resistance

c.

Potential gradients

d.

A condition of no current flow through the galvanometer

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