which of the following statements is true
1. insulators do not contain electrons
2. charge carriers in conductors are free electrons
3. insulators always contain more electrons than conductor
4. atoms in a conductor can move about but those in an insulator cannot move

Dear Student,

 

Please find below the solution to the asked query:

All material contains electron which is, so statement 1 is not correct.

In conductor charge carried by the free electron so statement 2 is correct.

No of electrons in a material depends on material and its atomic no. More atomic no will have more electron, third statement is wrong.

In conductor only electrons can move and atoms remain static in their respective position, so statement 4 is wrong.

So 2. is correct.
 

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