An electron is circulating in a circular path with a frequency of 50 Hz. What is the associated current?
Correct answer: A. 0.8 X 10 -17 A
- A. 0.8 X 10 -17 A
- B. 8 x 10^-17 A
- C. 0.4 x 10^-17 A
- D. 80 x 10^-17 A
Explanation
The current associated with a circulating electron can be calculated with the formula I = Qf, where Q is the charge of an electron (approximately 1.6 × 10-19 C) and f is the frequency (50 Hz). By substituting these values, we get I = (1.6 × 10-19 C) × (50 Hz) = 0.8 × 10-17 A. Therefore, option A is correct.Options B, C, and D are incorrect due to miscalculations. Option B overestimates the current by a factor of 10, option C underestimates the current by a factor of 2, and option D overestimates the current significantly, likely due to incorrect multiplication.
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