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When the power delivered by a 100 volt b...

When the power delivered by a 100 volt battery is 40 watts the equivalent resistance of the circuit is

A

100ohms

B

25ohms

C

300ohms

D

250ohms

Text Solution

Verified by Experts

The correct Answer is:
4
Power `=(V^(2))/(R)`
`4 0=((100)^(2))/(R)`
or `R=(100xx100)/(40)Omega`
or `R= 250Omega`
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