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JEE Main 2005 (AIEEE) · Power, Power Factor & Wattless Current

Power, Power Factor & Wattless Current question from JEE Main 2005 (AIEEE)

Q78JEE Main 2005 · AIEEEEasy

Power, Power Factor & Wattless Current

A circuit has a resistance of $12\ \text{ohm}$ and an impedance of $15\ \text{ohm}$ . The power factor of the circuit will be

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Answer: (b)

Power factor $\cos\phi = \frac{R}{Z}$ .
$\cos\phi = \frac{12}{15} = 0.8$ .
So the answer is (b) 0.8.

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