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Major Spinka DVM

Feb 20, 2025

What is the solution to this question?

A capacitor is connected across an oscillating emf with a peak current through the capacitor of 7.00 A. If the frequency ω is doubled, what is the peak current? 7.00 A 4.95 A 3.50 A 14.0 A
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Raymond Moen

Feb 20, 2025

The reactance (a bit like resistance) of a capacitor is Z = 1/(ωC) = 1/(2πfC)Look at the formula – doubling ω halves the reactance. It’s a bit like halving the resistance in a simple DC circuit. So current doubles from 7A to 14A.... Show More
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