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In given circuit total power consumed is...

In given circuit total power consumed is 150 W. Then value of R = ......

A

2` Omega`

B

`6 Omega`

C

`5 Omega`

D

`4 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
`6 Omega`
Power used in Parallel connection `P_(p) = P_(2) + P_(R)`
`therefore 150 = (V^(2))/(2) + (V^(2))/(R)`
`therefore 150 = ((15)^(2))/(2) + ((15)^(2))/(R)`
`therefore ((15)^(2))/(R) = 150 - (225)/(2) = (75)/(2)`
`therefore R = (225 xx 2)/(75)`
`therefore R = 6 Omega`
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