Question
Physics Question on Units and measurement
The maximum error in the measurement of resistance, current and time for which current flows in an electrical circuit are 1%, 2% and 3% respectively. The maximum percentage error in the detection of the dissipated heat will be
A
2
B
4
C
6
D
8
Answer
8
Explanation
Solution
∵ H = i2 Rt
∵ % error in H = 2 × 2% + 1% + 3%
= 8%