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What happens if a 5 A fuse is connected ...

What happens if a 5 A fuse is connected to a wire carrying 15 A current ?

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The fuse melts and breaks the circuit preventing all the appliances from working .
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ZEN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT -Additional question section (Very-short-answer [vsa] type questions)
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  14. Why are magnetic field lines closed curves ?

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  15. What happens if a bar magnet is cut into twopieces i] perpendicular...

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