Physics And Measurement Question 177

Question: The resistance R = Vi where V= 100 ± 5 volts and i = 10 ± 0.2 amperes. What is the total error in R

Options:

A) 5%

B) 7%

C) 5.2%

D) 52 %

Show Answer

Answer:

Correct Answer: B

Solution:

∴ (ΔRR×100)max=ΔVV×100+ΔII×100

=5100×100+0.210×100

=(5+2) % = 7%

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