A charge of 50 mA flows for 0.5 hrs. through an electric circuit. Calculate numbers of electrons which will drift in the circuit.(Charge on one electron =1.6*10^-19C)
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⇒ I = 50 × 10^-3 A
⇒ t = 1800 s
⇒ I = q/t
⇒ I = ne/t
⇒n = It/e
⇒ n = 50 × 10^-3 × 1800 / 1.6 × 10^-19
⇒n = 5.6 × 10^20
⇒ t = 1800 s
⇒ I = q/t
⇒ I = ne/t
⇒n = It/e
⇒ n = 50 × 10^-3 × 1800 / 1.6 × 10^-19
⇒n = 5.6 × 10^20
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