4.2.1.3 - Current, resistance and potential difference

In a single, closed loop the current….

… has the same value everywhere in the circuit

What does the current through a circuit depend on?

depends on resistance (R) and the potential difference across the components

What is resistance?

Anything that slows down the flow of current - Ohms

The greater the resistance across a component….

… the smaller the current (for a given potential difference) across the component

Give the formula for potential difference.

potential difference = current x resistance

V = IR

Give the unit for all the parts in the formula

potential difference - volts

current - amps

resistance - ohms