Question

The resistance R=V/I where V = 10.0+ 0.1 volt and i = 10.0 ± 0.4 ampere. Percentage error in R is
options:
a) 7%
b) 2%
c) 14%
d) 5%​

Answer 1

As we know, resistance is the ratio of voltage used and current flowing through the circuit. So,

R = V/I

By error calculation (division formula)

DeltaR/R = [(Delta V) /V] *100 +[(delta I) /I] *100

= (5/100)*100 + (0.2/10)*100

= 5 + 2

=7%

So, percentage error in resistance (R) = +- 7%.

Hope it helped to clear your delimma.

Thank you