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The impedence of a consists of 3ohm resi...

The impedence of a consists of `3ohm` resistance and `4ohm` reactance. The power factor of the circuit is across the coil to the current thruogh the coil will be

A

`0.4`

B

`0.6`

C

`0.8`

D

`1.0`

Text Solution

Verified by Experts

The correct Answer is:
B
`Z=sqrt(R^(2)+X^(2))=sqrt(4^(2)+3^(2))=5`
`:. cos varphi =R/Z=3/5=0.6`
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