H2P-203

Combining uncertainties

H2 Physics · JC 1 · Easy · Combining uncertainties

A current

I = (2.80 \pm 0.04)\text{ mA}

flows through a resistor of resistance

R = 120\,\Omega \pm 2\%

. The power is calculated using

P = I^2 R

. What is the percentage uncertainty in

P

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