Question

Example 2.9 The resistance R=V/I where
V=(100 5V and / - (10 +0.2)A. Find the
percentage error in R.
inst
The​

Answer 1

Answer:

R=

i

V

V=100±5V

i=10±0.2A

R=

10

100

=10Ω

R

ΔR

=

V

ΔV

+

i

Δi

=

100

5

+

10

0.2

=0.05+0.02

R

ΔR

=0.07⇒ΔR=R×0.07=0.7Ω

R=(10±0.7)Ω

Hope this answer helpful for you

Answer 2

The percentage error in V is 5% and in I it is 2%. the total error in R would therefore be 5% + 2% = 7%.

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