In A PO box experiment it is found that for the `100:10` ratio deflection in the galvanometer is to the left by 0.7 division of the scale when resista
In A PO box experiment it is found that for the `100:10` ratio deflection in the galvanometer is to the left by 0.7 division of the scale when resistance I the rheostat are is `978Omega` and to the right by 1.2 division when is `979Omega`. Calculate the unknown resistance.
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