Which of the following apparatus will require the smallest fuse rating for its protection?
PHYSICS
JAMB 1992
Which of the following apparatus will require the smallest fuse rating for its protection?
- A. 60W, 240V
- B. 60W, 40V
- C. 40W, 12V
- D. 40W, 5V
Correct Answer: A. 60W, 240V
Explanation
I = \(\frac{P}{V}\) = \(\frac{60}{240}\) = 0.25A
I = \(\frac{P}{V}\) = \(\frac{60}{40}\) = 1.5A
I = \(\frac{P}{V}\) = \(\frac{40}{12}\) = 3.3A
I = \(\frac{P}{V}\) = \(\frac{40}{5}\) = 8A
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