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Q.

An LCR series circuit consists of a resistance of 10Ω , a capacitor of reactance 60Ω and an inductor coil. The circuit is found to resonate when put across a 300 V, 100 Hz supply. The inductance of the coil is (take π = 3)

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a

0.1 H

b

0.01 H

c

0.2 H

d

0.02 H

answer is A.

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Detailed Solution

XL=XCωL=60Ω2πf×L=60L=60200×π=0.095HL=0.1H

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