The average power dissipated in AC circuit is 2W. If a current flowing throuh a circuit is 2A, impedance is `1Omega`, then what is the power factor of

Question

The average power dissipated in AC circuit is 2W. If a current flowing throuh a circuit is 2A, impedance is `1Omega`, then what is the power factor of

The average power dissipated in AC circuit is 2W. If a current flowing throuh a circuit is 2A, impedance is `1Omega`, then what is the power factor of the circuit?
A. `0.5`
B. 1
C. Zero
D. `1/sqrt(2)`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
As a average power, `hatP= 2W, I_(rms) = 2A`, ltbrltgt Impedance, `Z=1Omega`
Power factor `(cosphi)`=?
We know that, `barP = V_(rms) xx I_(rms) xx cos phi`
`rArr barP= I_(rms)^(2)Z.cosphi`
`cosphi= barP/(I_(rms)^(2)Z) = 2/(2^(2)xx1)=2/4 =1/2=0.5`

5 views Answered 2023-02-05 15:29