The current flowing through a component depends on:
When a charge moves through a potential difference, work is done by the power supply and energy is transferred from it to the component and/or its surroundings. The potential difference can be calculated using the equation:
This is when:
2 C of charge transfers 4 J of energy. Calculate the potential difference needed.
3 C of charge moves through a potential difference of 6 V. Calculate the energy transferred.
Rearrange the equation: