15. Answer briefly - II

 

a. The SI unit of electric currentelectric chargeAmount of substance is Ampere.

 

b. One ampere is the amount of voltagechargecurrent flowing through a insulatorconductor if one coulomb of charge flows through it in one secondone hourone minute.

 

2. What is electric current?

 

Electric current is known as the flow of electricityflow of electric chargesflow of coulomb in a particular direction. The amount of electric charges passing through a insulator in one secondconductor in one secondconductor in one hour is known as the magnitude of electric current.