Question

In order to make an electric current flow it is necessary to have

Answer 1

In order to make an electric current flow it is necessary to have a source of the current or source of free electrons and also the circuit should be a close one or complete. When there is a break in a circuit, no current would flow in the whole system. 

Answer 2

Answer:

A potential difference

Explanation:

Chargue flows when there is a potential difference between the ends of a conductor. in order to generate a potential difference, it is necessary that the electric charges be under the action of an electric field, so that the necessary force is created for the charges to flow.