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Give the number of electrons passing through a wire per minute. The current flowing through it is 500mA.(a) 1.875 × 10^20(b) 6.875 × 10^20(c) 1.875 × 10^-20(d) 6.875 × 10^-20The question was asked in quiz.My question comes from Electric Current in chapter Current Electricity of Physics – Class 12

Answer» CORRECT choice is (a) 1.875 × 10^20

For explanation I would SAY: Number of electrons, n = \(\frac {It}{E}\).

= \(\frac {(500 \times 10^{-3} \times 60)}{(1.6 \times 10^{-19})}\)

= 1.875 × 10^20.


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