Voltmeters and Ammeters

Voltmeters

Voltmeters are used to measure the potential difference (voltage) across a component in a circuit.
They are always connected in parallel with the component in question.
High resistance is a key characteristic of voltmeters, which helps to prevent the metre from significantly altering the current flow through the circuit.
Remember to set the voltmeter to a range that is higher than the expected potential difference to avoid damaging the device.

Ammeters serve to measure the current flowing through a circuit.
They are always connected in series with the component being assessed.
Low resistance is essential to ammeters to ensure they do not significantly change the current they are measuring.
Similar to voltmeters, always set the ammeter to a range that is higher than the expected current to prevent causing damage.