What is the formula for calculating the efficiency of a heat engine?
A
mathrm cap e f f i c i e n c y is equal to the fraction with numerator cap t sub h minus cap t sub c and denominator cap t sub h times 100B
mathrm cap e f f i c i e n c y is equal to the fraction with numerator cap t sub c minus cap t sub h and denominator cap t sub h times 100C
mathrm cap e f f i c i e n c y is equal to the fraction with numerator cap t sub c minus cap t sub h and denominator cap t sub c times 100D
mathrm cap e f f i c i e n c y is equal to the fraction with numerator cap t sub h minus cap t sub c and denominator cap t sub c times 100