An L . C . R . circuit contains resistance of 110Ω and a supply of 220 V at 300 r a d s − 1 angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by 4 5 ∘

Question

An L . C . R . circuit contains resistance of 110Ω and a supply of 220 V at 300 r a d s − 1 angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by 4 5 ∘ . If on the other hand, the only the inductor is removed the current leads by 4 5 ∘ with the applied voltage. The R . M . S . current flowing in the circuit will be:

TestHub · Accepted Answer

tan 4 5 ∘ = ω C R 1 ​ = R ω L ​ ⇒ X L ​ = X C ​ ⇒ resonance i = R V ​ = 110 220 ​ = 2 A

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