In the given circuit,current I is independent | vedclass

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(C) The circuit contains a Wheatstone bridge configuration formed by resistors $R_1, R_2, R_3, R_4$ and $R_6$ as the central branch.For the current $I

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$R_1 R_4 = R_2 R_3$

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(C) The circuit contains a Wheatstone bridge configuration formed by resistors $R_1, R_2, R_3, R_4$ and $R_6$ as the central branch.For the current $I$ drawn from the source to be independent of the resistance $R_6$,the potential difference across $R_6$ must be zero,or the bridge must be balanced.In a balanced Wheatstone bridge,the ratio of the resistances in the arms is equal,i.e.,$\frac{R_1}{R_3} = \frac{R_2}{R_4}$.Rearranging this condition,we get $R_1 R_4 = R_2 R_3$.Under this condition,no current flows through $R_6$,making the total equivalent resistance of the circuit independent of the value of $R_6$.

In the given circuit,current $I$ is independent of the resistance $R_6$. Then

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