Give the number of electrons passing through a wire per minute. The current flowing through it is 500mA.
Correct answer: A. 1.875 x 10^20
- A. 1.875 x 10^20
- B. 6.875 x 10^20
- C. 1.875 x 10^22
- D. 6.875 x 10^22
Explanation
The number of electrons passing through the wire can be determined by using the formula n = It/e, where:I = 500mA = 500 × 10-3 A (since 1mA = 10-3 A)t = 60 seconds (since the problem asks for the number of electrons per minute)e = 1.6 × 10-19 C (the charge of an electron)Plugging these values into the formula, we get:n = (500 × 10-3 A) × 60 s / (1.6 × 10-19 C) = 1.875 × 1020 electrons.Hence, the correct answer is Option A. The other options involve errors in calculation, resulting in incorrect numbers of electrons.
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