Question

The resistance R is the ratio of potential difference V and current I. What is the % error in R if V = (100 ± 5) volt and I = (10 ± 0.2)A ?

Answer 1

for 100v and 10a r=v/I=10ohm

for 105v and 9.8a r=105/9.8=10.714ohm

for 95v and 10.2a r=9.314

range of resistance=10.714-9.314=1.4

ohm

error=100×1.4/10=14%