1.

The potential gradient on wire PQ is 10–5 V then the reading of voltmeter is -(1) 3 mV(2) 5 mV(3) 7 mV(4) 9 mV

Answer»

The correct option is (2) 5 mV.

Explanation:

Reading = Potential gradient x length

= 0.01 x 0.5

= 5 x 10-3 V

= 5 mV



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