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  4. In an AC circuit the power factor (1) is unity when the circuit contains as ideal resistance only (2) is zero when the circuit contains an ideal inductance only (3) is zero when the circuit contains an ideal resistance only (4) is unity when the circuit contains an ideal inductance only

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Q. In an AC circuit the power factor (1) is unity when the circuit contains as ideal resistance only (2) is zero when the circuit contains an ideal inductance only (3) is zero when the circuit contains an ideal resistance only (4) is unity when the circuit contains an ideal inductance only

BHUBHU 2008

Solution:

Correct answer is (b) 1 and 2 are correct.