JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Medium

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Application +4 | -1

In meter bridge arrangement, resistances

x

and

y

are used in 2 gaps of bridge. Null point is at distance of

25 \mathrm{~cm}

from one of the end wire

(y>x)

. If resistance of

2 x

is used instead of

x

then calculate distance of null point from same end of wire.

View answer and explanation

Correct option: A

40 \mathrm{~cm}

Option A (

40 \mathrm{~cm}

) is correct because it is calculated by using the meter bridge principle and solving the equations for the two cases.

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