Question

Suggest what changes must be done to the heater so that it gives more heat. Justify your answer.​

Answer 1

A heating wire should be such that it produces more heat when current is passed through it and also does not melt. It will be so if it has high specific resistance and high melting point.

Answer 2

Concept:

When a voltage is applied to a conducting material, it has the property of providing resistance to the passage of current per unit length and cross-sectional area. Electrical energy is turned into thermal energy as a result.

Explanation:

• The heating element of an electric heater converts electrical energy into heat energy, therefore it should possess high specific resistance.
• Because the heating element of an electric heater is exposed to extremely high temperature ranges, it must be able to tolerate them. As a result, an electric heater's heating element should have a high melting point.

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