Question

An isolated metal sphere is heated to a high temperature. Will it become positively charged due to thermionic emission?

Answer 1

Answer:

Yes, it will become positively charged due to thermionic emission. When the metal sphere is heated, average kinetic energy of the electrons will increases, due to which, the free electrons of the metal sphere will be able to escape. As a result, they will leave a positive charge on the isolated metal sphere.

Answer 2

It will get charged positively. As the metal sphere is heated, the electrons average of total kinetic energy will increase, because of thermionic emission.

Explanation:

• Yes, because of thermionic emission, it will get charged positively. As the metal sphere is heated, the electrons ' average of total kinetic energy will increase, thus allowing the metal sphere's free electrons to escape.
• As a consequence they should give the isolated metal sphere a positive charge.  

Kinetic energy:- An object's kinetic energy is the energy it absorbs as a function of its motion. Every object in movement uses kinetic energy.

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