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Power = I 2 R = V 2 /R. First expression indicates power is directly proportional to R and second indicates power is inversely proportional to R. Which is correct?

Power = I2R =  V2/R.


First expression indicates power is directly proportional to R and second indicates power is inversely proportional to R.


 


Which is correct?


 

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1 Answers

Sukhendra Reddy Rompally B.Tech Mining Machinery Engg, ISM Dhanbad
93 Points
13 years ago

second

power is always inversly proportional to R

substituting v=ir,u get the first,but dat is for ohmic substances only

neways,always use the second eqn

plzzz approve my answer if u like it

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