If a current of 0.5amp flows through a metallic wire for 2h, then how many electrons flow through the wire

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4.5×1022

2.25×1022

6.03×1023

2.25×1021

answer is B.

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Detailed Solution

Q = Ct = (0.5amp)(2×60×60sec) =3600 coulombs no.of electrons =36001.6×10-19=2.25×1022 (∵ 1.6×10-19c=1 electron)

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