Suppose electrical power P is given by 
, where E is voltage and R is resistance. Approximate the maximum percent error in calculating the power if 120 volts are applied to a 5000-ohm resistor and the possible percent errors in measuring E and R are 3% and 4%, respectively.
?
A. 7%
B. 9%
C. 10%
D. 5%
E. 2%
Answer: E
Mathematics
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