Initial data: t (duration of current passage through the electric bell) = 8 s; I (electric bell current) = 2.91 A.
Constants: e (value of the electron charge) = 1.6 * 10 ^ -19 Cl.
1) Let’s calculate the charge that will pass through the electric bell; q = I * t = 2.91 * 8 = 23.28 Cl.
2) Determine the number of electrons that passed through the call: n = q / e = 23.28 / (1.6 * 10 ^ -19) = 14.55 * 10 ^ 19 electrons.
Answer: In 8 seconds, 14.55 * 10 ^ 19 electrons will pass through the electric bell.
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