Question

what is dielectric? what of the following are dielectric : silicon,mica , iron?

Answer 1

Dielectric Constant (k) is a number relating the ability of a material to carry alternating current to the ability of vacuum to carry alternating current.  The capacitance created by the presence of the material is directly related to the Dielectric Constant of the material.

 

Silicon is a diaelectric.

Answer 2

the property transfer of electric force without the conduction, mica