Physics for IGCSE & O level - Electricity (Section 2 - No. 47)
If you connect a voltmeter across a resistor, what does it measure?
The current through the resistor
The resistance of the resistor
The voltage across the resistor
The power dissipated by the resistor
הֶסבֵּר
A voltmeter measures the voltage (potential difference) across the resistor.