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(A) Let the resistance of each identical resistor be $R$ and the electromotive force of the ideal cell be $V$.In series combination,the equivalent res

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$4$

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(A) Let the resistance of each identical resistor be $R$ and the electromotive force of the ideal cell be $V$.In series combination,the equivalent resistance is $R_s = R + R = 2R$.The current through the circuit is $I_s = \frac{V}{2R} = 2 \ A$,which implies $V = 4R$.In parallel combination,the equivalent resistance is $R_p = \frac{R 	imes R}{R + R} = \frac{R}{2}$.The total current drawn from the cell is $I_p = \frac{V}{R_p} = \frac{4R}{R/2} = 8 \ A$.Since the resistors are identical and connected in parallel,the current divides equally through each resistor.Therefore,the current through each resistor is $I' = \frac{I_p}{2} = \frac{8 \ A}{2} = 4 \ A$.

When two identical resistors are connected in series to an ideal cell,the current through each resistor is $2 \ A$. If the resistors are connected in parallel to the same cell,the current through each resistor is: (in $A$)

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