An inductor and a resistor are connected to an ac supply of 120 V, 50 Hz. The resistance of the resistor is 20Ω. If the voltages leads the current by a phase difference of 45°, find the inductance of the inductor.
An inductor and a resistor are connected to an ac supply of 120 V, 50 Hz. The resistance of the resistor is 20Ω. If the voltages leads the current by a phase difference of 45°, find the inductance of the inductor.
Option 1 -
40mH
Option 2 -
63.7mH
Option 3 -
66.7mH
Option 4 -
133.3mH
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1 Answer
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Correct Option - 2
Detailed Solution:X? = X? ⇒ ωL = R ⇒ 2 × 3.14 × 50 × L = 20 ⇒ L = 63.7mH
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