1. current is the flow of electron,then it must have speed!
can any one tell what is the speed of current?

2.

3. It is typically about 3/4 of the speed of light. It varies slightly depending on the material, temperature, voltage and other factors.

4. i studied that current can travel at a lightspeed in gold and 95% of light speed in copper,it is true or not?

5. And thanks for replying for my all question @strange

6. I have no idea! But it sounds wrong. It certainly can't travel at lightspeed in any material.

7. is there any other thing that can trevel faster than light

8. The speed of the electrons in the wire is surprisingly slow.

Drift velocity - Wikipedia, the free encyclopedia

9. Originally Posted by sabari raja
is there any other thing that can trevel faster than light
Nothing can travel faster than light.

10. The actual velocity of a single electron is very slow & it does not travel very far. ( in AC current it just moves back & forth) You can picture it as the balls on a billiards table. When you hit the first ball in a long line of balls it hits the 2nd ball which hits the 3rd ball etc. Very quickly the last ball is moved even though none of the balls travelled very far. This is what happens in current flow as the electrons jump from one atom to another. One atom is hit by an electron & it immediately ejects an electron which moves to the next atom and so on. I remember (vaguely) in EL-101 calculating the actual velocity & distance moved by an electron. It was a function of current flow, conductor material, and cross sectional area of the conductor.

11. Yep, each electron drifts really slowly - how ever the message to start drifting moves down the wire at around 2/3 c.

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