In a Wheatstone's bridge all the four arms have equal resistance $R$. If the resistance of the galvanometer arm is also $R$, the equivalent resistance of the combination as seen by the battery is

Question

In a Wheatstone's bridge all the four arms have equal resistance $R$. If the resistance of the galvanometer arm is also $R$, the equivalent resistance of the combination as seen by the battery is, $2 \mathrm{R}$, $\frac{R}{4}$, $\frac{R}{2}$, $\mathrm{R}$

MARKS App · Accepted Answer

Since, wheatstone's bridge is balanced, then resistance of galvanometer will be uneffective.

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