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15/01/2022 6:21 pm
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If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?
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15/01/2022 6:25 pm
I = 0.5 A
t = 2 hours = 2 × 60 × 60 s = 7200 s
Thus, Q = It
= 0.5 A × 7200 s
= 3600 C
We know that
96487C = 6.023 x 1023 number of electrons.
Then,
3600 C = \(\frac{6.023 \times 10^{23} \times 3600}{96487}\) number of electrons
= 2.25 x 1022 number of electrons
Hence, 2.25 x 1022 number of electrons will flow through the wire.