Question

The heat generated in a circuit is given by `Q = I^(2) Rt` , where `I` is current , `R` is resistance , and `t` is time . If the percentage errors in measuring `I , R , and t are 2% , 1% , and 1%` , respectively , then the maximum error in measuring heat will be
A. `2 %`
B. `3%`
C. `4%`
D. `6%`

Answer 1

Correct Answer - D
Required error is` 2 xx 2% + 1% + 1% , i.e ., 6%`.