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For a post office box, the graph of galv...

For a post office box, the graph of galvanometer deflection versus (R ) (resistance pulled out of resistance box) for the ratio `100:1 ` is given as shown. Find the value of unknown resistance.
.

A

3.2 ohm

B

3.24 ohm

C

3.206 ohm

D

None

Text Solution

Verified by Experts

The correct Answer is:
B
Deflection is zero for 324 so value of unknown resistance `= (324)/(100) = 3.24 Omega`
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ALLEN-ERROR AND MEASUREMENT-Part-2(Exercise-1)
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