If Im is the current at resonant frequency, current through the circuit at half power frequencies will be

Question

If Im is the current at resonant frequency, current through the circuit at half power frequencies will be (A)  (Im/2) (B)  (Im/√2) (C) √2 Im (D)  (Im/2 √2)

Tardigrade Admin · Accepted Answer

Current at resonant frequency = Im Power in ac circuit, P = I2 Z cos φ Hence, if power will be half then current through the circuit is (Im/√2) for a given frequency.

Q. If $I_{m}$ is the current at resonant frequency, current through the circuit at half power frequencies will be

$\frac{I _{m}}{2}$

$\frac{I _{m}}{2}$

$2 I_{m}$

$\frac{I _{m}}{2 2}$

Current at resonant frequency $= I_{m}$
Power in ac circuit, $P = I^{2} Z cos ϕ$
Hence, if power will be half then current through the circuit is $\frac{I _{m}}{2}$ for a given frequency.

Q. If Im​ is the current at resonant frequency, current through the circuit at half power frequencies will be

2Im​​

2​Im​​

2​Im​

22​Im​​

Current at resonant frequency =Im​ Power in ac circuit, P=I2Zcosϕ Hence, if power will be half then current through the circuit is 2​Im​​ for a given frequency.

Q. If $I_{m}$ is the current at resonant frequency, current through the circuit at half power frequencies will be

$\frac{I _{m}}{2}$

$\frac{I _{m}}{2}$

$2 I_{m}$

$\frac{I _{m}}{2 2}$

Current at resonant frequency $= I_{m}$
Power in ac circuit, $P = I^{2} Z cos ϕ$
Hence, if power will be half then current through the circuit is $\frac{I _{m}}{2}$ for a given frequency.