Question
Physics Question on Resistance
What should be the characteristic of fuse wire?
A
High melting point, high specific resistance
B
High melting point, low specific resistance
C
Low melting point, low specific resistance
D
Low melting point, high specific resistance
Answer
Low melting point, high specific resistance
Explanation
Solution
Fuse wire are used in electric circuits to protect home appliances from damaging by huge amount amount of current. Fuse wire should be such that it melts immediately when strong current flows through the circuit. The same is possible if its melting point is low and resistivity or the resistance is high.