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NEET UG PHYSICS MCQ: ALTERNATING CURRENT
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Medium
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Application
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The potential difference V and the current i flowing through an instrument in an ac circuit of frequency are given by V=5cosωt volts and I=2sinωt amperes (where ω=2πf). The power dissipated in the instrument is
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Correct option: A
Zero
Option A (Zero) is correct because the voltage and current are 90 degrees out of phase, resulting in zero average power dissipation.
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