The maximum error in the measurement of resistance, current and...

Heat generated through resistance is given by, $H = {i}^{2}Rt$

Therefore, the percentage error in the calculation can be found by,

$⇒ \dfrac{\DeltaH}{H} \times 100 = 2 \times \dfrac{\Deltai}{i} \times 100 + \dfrac{\DeltaR}{R} \times 100 + \dfrac{\Deltat}{t} \times 100$

$⇒ \dfrac{\DeltaH}{H} \times 100 = 4$

$⇒ \dfrac{\DeltaH}{H} \times 100 = 8$