Mathematics · Alternating Current Calculations
A potential difference of 4.5 V is measured across a coil when it carries a direct current of 9 A. When the same coil carries an alternating current of 9 A at 25 Hz, the potential difference is 24 V. Find the power dissipated by the coil when it is connected to a 50 V, 50 Hz supply.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19 W
- 232.56 W
- 354.54 W
- 445 W✓
Correct answer
45 W
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