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BITSAT2013PhysicsCurrent ElectricityActual

What should be the characteristic of fuse wire?

Options

  1. AHigh melting point, high specific resistance.
  2. BLow melting point, low specific resistance.
  3. CHigh melting point, low specific resistance.
  4. DLow melting point, high specific resistance.

Correct answer

D. Low melting point, high specific resistance.

Step-by-step solution

Fuse wire should be such that it melts immediatley when strong current flows through the circuit. The same is possible if its melting point is low and resistivity is high.

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