- #1
jinx007
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I am having a lot pf problem to attempt this question, please help me, i am stuck..!
The power loss P in a resistor is calculated using the formula p=v^2/R
The uncertainty in the potential difference V is 3% and the uncertainty in the resistance R is 2%. What is the Uncertainty in P?
A/ 4%
B/ 7%
C/ 8%
D/ 11%
Hmmm My attempt:
Fractional error = in V, 0.09 and in R 0.2 i subtracted and i got 0.11 that is 11% ANSWER D
And i can be at 98% sure that the answer is not correct as uncertainty cannot be substrate d ..? please help me to attempt the question !
The power loss P in a resistor is calculated using the formula p=v^2/R
The uncertainty in the potential difference V is 3% and the uncertainty in the resistance R is 2%. What is the Uncertainty in P?
A/ 4%
B/ 7%
C/ 8%
D/ 11%
Hmmm My attempt:
Fractional error = in V, 0.09 and in R 0.2 i subtracted and i got 0.11 that is 11% ANSWER D
And i can be at 98% sure that the answer is not correct as uncertainty cannot be substrate d ..? please help me to attempt the question !