# GCSE physics power help

can someone please explain to me why a battery with a larger potential difference will supply more energy to the circuit per coulomb cause I don't get it
Original post by injeolmii
can someone please explain to me why a battery with a larger potential difference will supply more energy to the circuit per coulomb cause I don't get it

According the definition potential difference work done per unit charge (w=qv) it follows that (v=w/q) so larger work is done per unit charge by larger terminal potential difference
The way I think about it is

1 Volt is equal to 1 Joule per Coulomb

(also 1 Amp is equal to 1 Coulomb per second)
Current is defined as the flow of electric charge and electrons carry this charge around the circuit. Potential difference is the energy transferred between two points in the circuit. So if there is a higher potential difference then there is more energy. As electrons are carrying this charge and need energy to do so, there will be more energy per coulomb.

Hope this helps?!