Question

The potential difference across a resistor in a circuit is 100 ± 5 V and the
current through the circuit is 10 ± 0.2 A. Find the percentage error in
resistance if R = V/I. i will report the wrong answers

Answer 1

Answer:

R=iV

V=100±5V

i=10±0.2A

R=10100=10Ω

RΔR=VΔV+iΔi

          =1005+100.2

          =0.05+0.02

RΔR=0.07⇒ΔR=R×0.07=0.7Ω

R=(10±0.7)Ω