Electrical Engineering - Voltage, Current and Resistance - Discussion

The answer may be semiconductor also why b/c in normal condition it doesn't allow to flow electrons. It allows electrons only when temp is critical temp & critical temp is not as a normal condition.

Electric charge carriers and ions are required to pass current from a substance. Insulators are non-conductor of electricity. Insulators cannot conduct electricity because they do not posses free electrons or charge carriers and ions. Ionic compounds in solid state are insulator. The forbidden energy gap is very large in insulators as compared to conduction band. Moreover, some insulators like ionic compounds can conduct electricity in molten or solution form due to the presence of free ions.

Insulator is bad conductor of electricity so it not allow to pass current.

Semiconductor won't conduct in normal conditions so that may be the correct answer.

Semiconductor can carries current?

Semiconductor is a materiel whose conductivity lies between conductor and insulator such as ge, si, etc.

What about semiconductor?

I agree with my friend @Rajesekhar. Insulator is a bad conductor of electricity.

Valence electron mean its contain a lot of free electron incase temperature increase electron move from valence band to conduction band.

What is Valence ?