How many electrons pass through the cross-section of a conductor in 14 minutes if the current
| August 2, 2021 | education
How many electrons pass through the cross-section of a conductor in 14 minutes if the current strength of the circuit is 0.5 A.
The required number of electrons that have passed through the cross section of a given conductor can be expressed from the formula: I = q / t = n * qe / t, whence n = I * t / qe.
Variables and constants: I – current in the circuit (I = 0.5 A); t – elapsed time (t = 14 min = 840 s); qе is the charge of one electron (qе = -1.6 * 10 ^ -19 C).
Calculation: n = I * t / qe = 0.5 * 840 / (1.6 * 10 ^ -19) = 262.5 * 10 ^ 19 electrons.
Answer: In 14 minutes, 262.5 * 10 ^ 19 electrons should pass through the cross section of a given conductor.
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