Nichrome is used in the coils of a heater because of its ______________.

low resistance and low melting point

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high resistance and low melting point

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low resistance and high melting point

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high resistance and high melting point

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Solution

The correct option is D
high resistance and high melting point

When an electric current passes through the nichrome, it produces a lot of heat due to its high resistance. It has also high melting point so it doesn't melt even though the amount of heat generated is large. Due to the above reasons, it is used in the coils of a heater.

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