Numerical - Uncertainty in power for given resistance & current flow in circuit

Q.  If the resistance in a circuit is given by 80Ω ± 0.2% and the current flowing through it is 5A ± 0.1%, then the uncertainty in the power will be
- Published on 03 Nov 15

a. ± 0.2 %
b. ± 0.4 %
c. ± 0.6 %
d. ± 0.8 %

ANSWER: ± 0.4 %

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