1.

In a metre bridge experiment the null point is obtained near the middle of the wire by:-adjusting the rheostat-adjusting the emf of the battery-interchanging the resistances in the gaps-adjusting the resistance taken from the resistance box

Answer»

option 3 is the answer.A resistance wire is introduced in gap S and the resistance box is in gap R. One end of the galvanometer is connected to terminal D and its other end is connected to a jockey. As the jockey slides over the wire AC, it shows zero deflection at the balancingpoint(null point).

but the answer given is, A is the correct option.



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