Explain how a current is created and how a circuit works.

See the explanation below

Explanation:

Ohm law is defined as the voltage is equal to the current product by the resistance.

V = I * R

where:

V = voltage [volt]

I = current [amp]

R = resistance [ohm]

Therefore for a current to exist there must be a voltage and elements that exert resistance to the passage of electrons from one point to another.

There must be a closed loop between the connection points of the source, so that the current can flow freely. Any opening of the circuit will interrupt the current flow.

think its the third option

battery with hi vtge high val resist in series