A 60 W , 120 V bulb is connected to a 240 V , 60 Hz supply with an inductance in series. Find the value of inductance so that bulb gets correct voltage.

Question

A 60 W , 120 V bulb is connected to a 240 V , 60 Hz supply with an inductance in series. Find the value of inductance so that bulb gets correct voltage., 2.3 π H, 2 3 H, π H, 2 3 π H

MARKS App · Accepted Answer

R = 120 2 60 = 240 Ω we require i = 0.5 A Or Z = 480 Ω X L = 480 2 - 240 2 = 240 3 Ω L = 240 3 60 × 2 π = 2 . 3 π H

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