The heat generated in circuit q=I2 Rt where I is current, R is resistance and t is time. If the percentage error in measuring I, R and t are 2%, 1 respectively, then the maximum error in measuring heat will be
6%
Heat generated,H = I2Rt
The error can be expressed as :
ΔHH=2×ΔII + ΔRR + Δtt
So, the required error=2×2%+1%+1%=6%