Which of the following apparatus will require the smallest fuse rating for its protection?

Correct Answer: Option A

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