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Ohm's Law

A good thermi...

Question

A good thermionic emitter has

A

High resistance.

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B

High temperature coefficient of resistance.

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C

High work function and high melting point.

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D

Low work function and high melting point.

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Solution

The correct option is D Low work function and high melting point.
A good thermionic emitter has :
Low work function.
High melting point.

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