Questions
A fuse wire should have
a
Low resistance and high melting point
b
Low resistance and low melting point.
c
High resistance and high melting point
d
High resistance and low melting point
detailed solution
Correct option is D
Rate of heat generation is i2R. So for a given i more heat is generated if R is high. Also low melting point will let it to break when high current passes through it.Talk to our academic expert!
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A piece of copper and the other of germanium are cooled from the room temperature to 80K, then which of the following would be correct statement?
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