Question

For a post office box, the graph of galvanometer deflection verus (R ) (resistance pulled out of resistance box) for the ratio `100.1 ` is given as shown. Find the value of unknown resistance.
.
A. `324 Omega`
B. `3 .24 Omega`
C. `32.4 Omega`
D. None of the above.

Answer 1

Correct Answer - B
Deflection is zero for `R = 324 Omega`
Now, `X =(Q/P)R = (1/(100))(324)`
=`3.24 Omega`.