Why are wires of different materials and different lengths and thicknesses used?

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Solution

The amount of heat produced in a wire depends on its material, length and thickness.

Thus for different requirements, the wires of different lengths and thickness and materials are used.

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Why are wires of different materials and different lengths and thicknesses used?

The amount of heat produced in a wire depends on its material, length and thickness. Thus for different requirements, the wires of different lengths and thickness and materials are used.

The amount of heat produced in a wire depends on its material, length and thickness.

Thus for different requirements, the wires of different lengths and thickness and materials are used.