Q112 / 150 · MHT CET 2020 (12 Oct Shift 1) · Physics

In meter bridge experiment, to minimize an error due to contact resistance,

A
use non-uniform meter bridge wire.
Correct answer
B
repeat the experiment by interchanging the resistance in gaps.
C
increase the current flowing through meter bridge wire.
D
changing the value of known resistance in the gap.

Solution

by interchanging the positions of known and unknown resistance.

Hence, the correct answer is option: 'B'.

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