Inasimpleelectricalcircuit,thecurrentinaresistorismeasuredas(2.500.05)mA.T
heresistorismarkedashavingavalueof4.7欧姆正负2%.
Ifthesevalueswereusedtocalculatethepowerdissipatedintheresistorusingtheequation
P=I2R,whatwouldbethepercentageuncertaintyinthevalueobtained?