Experimental Skills-Potentiometer (NEET Physics): Questions 1 - 5 of 7

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Question number: 1

» Experimental Skills » Potentiometer

MCQ▾

Question

Two potentiometers A and B having 4 wires and 10 wires, each having 100 cm in length are used to compare e. m. f. of 2 cells. Which one will give a larger balancing length?

Choices

Choice (4) Response

a.

Potentiometer A

b.

Balancing length doesn’t depend on the total length of the wire.

c.

Potentiometer B

d.

A and B will give same balancing length

Question number: 2

» Experimental Skills » Potentiometer

MCQ▾

Question

Which device is used to measure the potential difference between two points of a conductor in the laboratory?

Choices

Choice (4) Response

a.

Potentiometer

b.

Voltmeter

c.

Ammeter

d.

Galvanometer

Question number: 3

» Experimental Skills » Potentiometer

MCQ▾

Question

The potential gradient of a potentiometer can be increased by which of the following operation?

Choices

Choice (4) Response

a.

By increasing the area of cross-section of potentiometer wire.

b.

By decreasing the current through it.

c.

By using a wire of material of low specific resistance. when A is decreased, k will increase.

d.

By decreasing the area of cross-section of the potentiometer wire.

Question number: 4

» Experimental Skills » Potentiometer

MCQ▾

Question

Potential gradient of a potentiometer is equal to

Choices

Choice (4) Response

a.

resistance per unit length

b.

emf per unit length

c.

potential drop per unit length

d.

current per unit length

Question number: 5

» Experimental Skills » Potentiometer

MCQ▾

Question

If we replaced potentiometer wire by another wire having more resistivity, than potential gradient will be,

Choices

Choice (4) Response

a.

Remain same

b.

Increasing

c.

may increase or may decrease.

d.

Decreasing

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