The potential difference across resistors connected in parallel is identical for each resistor. the current is split between the resistors. the total resistance is equal to the inverse of the sum of the inverses of the resistances in the resistors.
Resistors in series
The current through resistors connected in series is identical for each resistor. The potential difference is split in the ratio of their resistances. The total resistance is equal to the sum of the resistances of the resistors.
Electromotive force (emf)
The amount of energy transferred by a source, to each unit of charge that passes through it.
Internal resistance
The resistance to the flow of charge within a source. Internal resistance results in energy being dissipated within the source
Terminal potential difference
The potential difference across the terminals of a power source. It is equal to the source’s emf minus any voltage drop over the source‘s internal resistance.
Series circuits
Components are said to be connected in series when they are connected to be to end (in one loop)
Parallel circuits
Components are said to be connected in parallel when they are connected across each other (separate loops)
Potential divider
A method of splitting a potential difference, by connecting two resistors in series. The total potential difference is split in the ratio of their resistance.
Sensor circuit
Produces an output potential difference which changes as a result of a change of a physical variable.
