Can a electron travel slower than the speed of light?

As already said you are probably mistaking photons and electrons. Electrons of course travel slower than the speed of light but photons in a VACUUM travel at the speed of light. However, on Earth we can slow down light in many ways, an example is allowing it to travel through glass. I remember hearing that we were able to slow down light to speeds so slow that we can see the beam moving with the naked eye.

Old CRT tubes for TV's had electron guns in them that fired the electrons at the phosphorescent screen. If i remember correctly the electrons were traveling in excess of 20,000 MPH but thats not even close to the speed of light.

Older electronics (WWII type) used valves not transistors and the heating element was there purely to boil off electrons. These electrons inside the valves in some cases would only be traveling at a few hundred meters per second. Usually faster than that in radio valves but not allways.

Electrons, as particles of atoms, move very slowly, a few mm per second. But in any matter, electrons move as a wave, that is allthe moving electrons move in one motion, So the movement through the mediumis near the speed oflight.Picture a crowd of marbles in a tube, Push one more marbleinto the tube and one pops out the other end at the same time.

Electrons always travel slower than the speed of light, they have a mass so it's theoretically impossible for them to do so.

The less energy they have, the slower they will travel, it you cool a substance down to absolute zero (-273.2oC), the electrons will not move at all.

Photoelectrons are electrons, not photons. Photons always travel at c. Electrons always travel at less than c.

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Yes it can.

for example:

1.) it has a different speed in different metals (resistance depends on drift velocity, which is the speed of the electron in the metal)

2.) it can be stationary in certain cases

3.) when we test for its position in an atom, we bombard another atom/particle on it, which may reduce its speed.

Yes. normally speed of e is less than the speed of light.

* when the e is suddenly deccelerated it release it's energy as electromagnetic waves forms(x-rays, television).

* in cathode ray tube test u can alter the speed of electrons by using various potential.

hope u understand.

??

Electrons have mass (rest mass). ??

Do you understand that anything with (rest) mass can not travel at the speed of light????

The magnitude of the velocity of an electron may range between [0,c)

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That's a "yes", me bucko.

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sorry I meant c not ∞

Electron is a particle.waves travel with vel of light,but particles have vel less than light.