Experimental Skills-Meter Bridge (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 4 of 4

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Question number: 1

» Experimental Skills » Meter Bridge

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MCQ▾

Question

To calculate an unknown resistance with the help of a meter bridge why is it advised to change the gap with the known and unknown resistance?

Choices

Choice (4) Response

a.

To eliminate the resistance of the gap.

b.

To balance the known and unknown resistance.

c.

To include the resistance of the connecting wire and copper strip

d.

To eliminate the resistance of the connecting wire and copper strip

Question number: 2

» Experimental Skills » Meter Bridge

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MCQ▾

Question

If the wire in the experiment to determine the resistivity of a material using meter bridge is replaced by copper or hollow wire the balance point i. e. null point shifts to

Choices

Choice (4) Response

a.

at same point

b.

left

c.

right

d.

None of the above

Question number: 3

» Experimental Skills » Meter Bridge

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Question

In an experiment to determine an unknown resistance, a 100 cm long resistance wire is used. The unknown resistance is kept in the left gap and a known resistance is put into the right gap. The scale used to measure length has a least count 1 mm. The null point B is obtained at 40.0 cm from the left gap. Determine the percentage error in the computation of unknown resistance.

Choices

Choice (4) Response

a.

0.42%

b.

0.50%

c.

0.24%

d.

0.28%

Question number: 4

» Experimental Skills » Meter Bridge

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MCQ▾

Question

A meter-bridge is based on the principle of

Choices

Choice (4) Response

a.

Wheatstone bridge

b.

Variation of resistance with temperature

c.

Galvanometer

d.

None of the above

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