A) 20%
B) 2.5%
C) 5%
D) 10%
Correct Answer: C
Solution :
[c] Power \[p=\frac{{{V}^{2}}}{R}\] for small variation |
\[\frac{\Delta P}{P}\times 100%=\frac{2\times \Delta V}{V}\times 100%\] |
\[=2\times 2.5=5%\] |
Therefore, power would decrease by 5%. |
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