Question

The power loss in resister is calculated using equation P=V^2/R.the uncertanity in the V is 3%and uncertanity in the resistance R is 2%.what is uncertanity in P?

Answer 1

Answer:

8%

Explanation:

P=V^2/R

Delta P/P=2 deltaV/V +delta R/R

Uncertainly in P=2 uncertainly in V+ uncertainly in R

=2*3 +2

6+2

=8