Question:
What will happen if the frequency of power supply in a pure capacitor is doubled?
What will happen if the frequency of power supply in a pure capacitor is doubled?
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- Capacitive current is proportional to frequency (\( I \propto f \)).
Updated On: Feb 6, 2025
- The current will also be doubled
- The current will reduce to half
- The current will remain the same
- The current will increase to four-fold
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The Correct Option is A
Solution and Explanation
Step 1: Understanding capacitive reactance. - The current in a capacitor is given by: \[ I = V\omega C \] where \( \omega = 2\pi f \).
Step 2: Effect of doubling frequency. - If \( f \) is doubled, \( \omega \) is also doubled. - Since \( I \propto \omega \), current also doubles.
Step 3: Selecting the correct option. Since doubling frequency doubles current, the correct answer is (A).
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