Metals are good conductors of electricity because they have free.
The continuous flow of electrons is made possible by a device called:
The electric field can be detected:
If the direction of magnetic field is reversed, the direction of force is:
The process of emission of electrons from the hot metal surface is called:
If the input of NOT gate is "1" then its output is:
The Boolean expression of an AND gate is:
Electronics comprises the:
The Boolean expression of an OR gate is:
The cathode ray carry: