The electrical charge can be transferred from a charged object to another through
Vacuum
Air
an insulator
a conductor
A conductor is any material that allows the passage of free electrons. Examples of conductor include copper and iron.
Through which one of the given mediums can an electrical charge be easily transferred from a charged object to another?
Assertion(A): An electroscope can be used to find the nature of charge on a body. Reason(R): It is based on the principle: electric charge can be transferred from a charged object to another body.