Engineering Board Exam Reviewer · Energy and Power · medium
A 220, resistor is rated 14 W. What is the maximum current it can carry without exceeding its rating?
- 1.14 mA
- 67.42 mA
- 33.71 mA
- 16.85 mA
Answer
C. 33.71 mA
Solution
P=I2R I=sqrt(P/R)=sqrt(0.25/220)=33.7 mA.
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