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In previous question the resistance of c...

In previous question the resistance of coil `B` is

A

`0.58 Omega`

B

`5.8Omega`s

C

`1.16 Omega`

D

`11 .6Omega`

Text Solution

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The correct Answer is:
B
`cos phi = (R )/(Z) = (R_(A) + R_(B))/(Z)`
`(3)/(4) = (5 +R_(B))/(14.4) implies R_(B) =5.8 Omega`
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