Based on the following statements, choose the correct option:

Assertion: Heater wire must have high resistance and high melting point.

Reason: If resistance is high, the electric conductivity will be less.

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Both assertion and reason are true and reason is the correct explanation of assertion.

Both assertion and reason are true and reason is not the correct explanation of assertion.

The assertion is true but the reason is false.

The assertion is false but the reason is true.

answer is B.

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Detailed Solution

Assertion and reason are correct but reason is not the correct explanation of the assertion.
Assertion: According to Joule’s law of the heating effect of electric current, the heat produced is directly proportional to the amount of resistance of the conductor at a given supply of current.
Reason: Due to the high resistance of the wire, the heat produced is greater, and the melting point of the wire must be high to avoid melting wire.

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