131 In a potentiometer whose wire resistance is 1022 the potential fall per cm is V volts To reduce it to V 4 V cm the

Question

131 In a potentiometer whose wire resistance is 1022 the potential fall per cm is V volts To reduce it to V 4 V cm the resistance that must be connected in series with the potentiometer wir is 1 402 2 302 3 20 2 4 102

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