Current Electricity

Question

In a metre-bridge when a resistance in the left gap is … and unknown resistance in the right gap, the balance length is found to be …. On shunting the unknown resistance with …, the balance length changes by :

Accepted Answer

Option B. To solve this problem, let's first understand that a meter bridge setup is based on the principle of a Wheatstone bridge, in which two unknown resistances are in such a configuration that if the bridge is balanced, the ratio of the resistances on one side is equal to the ratio of resistances on the other side. In a balanced condition, no current flows through the galvanometer that is connected diagonally across the bridge.

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Current Electricity

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