ElectroMagnetic InductionHard
Question
In the circuit shown in the figure, the A.C. source gives a voltage V = 20 cos (2000 t) volt neglecting source resistance, the voltmeter and ammeter readings will be : -


Options
A.0V, 1.4A
B.5.6V, 1.4A
C.0V, 0.47 A
D.1.68 V, 0.47 A
Solution
Here
= 2000 rad / s
⇒
so resonance condition
⇒ I =
= 1.4A
and reading of voltmeter = (I) (4) = 4√2 = 5.6V
⇒
so resonance condition
⇒ I =
and reading of voltmeter = (I) (4) = 4√2 = 5.6V
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