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NEET UG PHYSICS MCQ: ALTERNATING CURRENT

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Analyzing +4 | -1
The voltage of an AC source varies with time according to the relation E=200sin⁡(100πt)cos⁡(100πt)E = 200\sin \left( {100\pi t} \right)\cos \left( {100\pi t} \right) Select correct statement.
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Correct option: D
The frequency of source voltage is 100 Hz
Option D (The frequency of source voltage is 100 Hz) is correct because using the trigonometric identity, the given equation simplifies to E=100sin⁡(200πt)E = 100\sin(200\pi t), indicating a frequency of 100 Hz.

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