Figure \(\PageIndex{1}\): A simple electric circuit in which a closed path for current to flow is supplied by conductors (usually metal wires) connecting a load to the terminals of a battery, represen...Figure \(\PageIndex{1}\): A simple electric circuit in which a closed path for current to flow is supplied by conductors (usually metal wires) connecting a load to the terminals of a battery, represented by the red parallel lines. In a simple circuit (one with a single simple resistor), the voltage supplied by the source equals the voltage drop across the resistor, since \(\mathrm{PE}=q \Delta V\), and the same \(q\) flows through each.
