Question

What does the voltage across a component measure? *
1. The number of charges that pass through the component.
2. The size of the cell in the circuit.
3. How hard it is for the current to flow through the component.
4. The energy transferred by the current

Answer 1

Answer:

Voltage is a measure of the energy carried by the charge. Strictly: voltage is the 'energy per unit charge'. The proper name for voltage is potential difference or p.d. for short, but this term is rarely used in electronics. Voltage is supplied by the battery (or power supply).