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According to Joule's law of heating , he...

According to Joule's law of heating , heat produced `H = I^(2) Rt`, where `I` is current , `R` is resistance of `I` , `R` , and `t are 3% , 4% , and 6% `, respectively , find error in the measurement of `H`.

A

`pm17%`

B

`pm 16%`

C

`pm 19%`

D

`pm 25%`

Text Solution

Verified by Experts

The correct Answer is:
B
`H=I^2 Rt`
`implies (DeltaH)/H xx100=((2DeltaI)/I+(DeltaR)/R+(Deltat)/t)xx100`
`=2xx3 + 4 +6 = 16%`
Hence the error in the measured of H is 16%.
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