Question

Q.41
The heat generated in a circuit is given by H = I-Rt joule
where I is current, R is resistance and t is time. If the per-
centage errors in measuring I, Randt are 2%, 1% and 1%
respectively. The maximum error in measuring heat will be-
(A)2%
B)3%
(C)4%
(D) 6%
​

Answer 1

Answer:

maximum error= (2di/i + dR/R +dt/t)×100

(2×2) + 1+1 = 6%

Answer 2

Answer:

D)6%

Explaination:

The formula for maximum error in measuring heat is

=2*(2%)+1*(1%)+1*(1%)

=4+1+1

=6%