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A fuse wire melts when a currentIm is p...

A fuse wire melts when a current`I_m` is passed through it. The value of `I_m` can be increased by:
[Assume that each change is made while keeping the other quantities fixed]

A

Decreasing the resistivity of the wire

B

Decreasing the area of cross-section of the wire

C

Increasing the resistivity of the wire

D

Increasing the melting point of the wire

Text Solution

AI Generated Solution

To solve the problem of how to increase the melting current \( I_m \) of a fuse wire, we can analyze the relationship between current, resistance, and resistivity. Here’s a step-by-step breakdown: ### Step 1: Understand the relationship between current, voltage, and resistance The current \( I_m \) that causes the fuse wire to melt can be expressed using Ohm's law: \[ I_m = \frac{V}{R} \] where \( V \) is the voltage across the fuse wire and \( R \) is the resistance of the wire. ...
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