Answer: The force that pushes charges through a wire is called Electromotive force.
Explanation :
Electromotive force or emf is a force that is developed by the battery or any other source. It is the same as the potential difference (V).
Also, the relation between V and I as per Ohm's law is, V = IR
R = resistance
We know that one volt is defined as the
.
This force is responsible for the current that is flowing in the circuit.
Hence, the correct option is (B)" electromotive force ".