why current flow through conductor not insulator

Question Posted / 120302

3 Answers
4291 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

why current flow through conductor not insulator..

Answer / ashutosh mishra

Since large number of free electrons(required for flow of current)are available in conductors,current flows through conductors on application of external voltage.
Due to absence of free electrons in insulators,curent does not flow through insulators.

Is This Answer Correct ?

19 Yes

1 No

why current flow through conductor not insulator..

Answer / jagadeesh

Energy band gap is very large for insulators compared to conductors

Is This Answer Correct ?

4 Yes

0 No

why current flow through conductor not insulator..

Answer / anandhakrishnan t

In conductors, the free electrons present above the valence band according to the atomic structure, are more.
EG: copper(cu) - atomic no=29. It has 9 electrons(1s2,2s2,2p6.3s2,3p6,4s2,3d9) on the outermost orbit as free electrons

But in insulators, the free electrons present are less.
EG: magnesium(Mg) - atomic no=12. It has no electrons(1s2,2s2,2p6,3s2,3p6(0)) on the outermost orbit of free electrons.

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electronics Communications Interview Questions

What are the effects of ageing or using second hand IC or other electronic components?

0 Answers Pakistan Steel,

what type of quesions asks in interview?

0 Answers TCS,

What is the function of BIU?

9 Answers TCS,

Explain why 440 volts instead of 660 volts in 3 phases of supply system?