What is the difference of potential between two points in a circuit commonly called?

What is the difference of potential between two points in a circuit commonly called?

• A. Voltage
• B. Current
• C. Resistance
• D. Power

Answer: (A)

Voltage is the difference of electric potential between two points in a circuit. It represents the energy per unit charge that would be available to move charges from one point to the other, effectively pushing them through the circuit. This driving force is what causes current to flow when a path exists, and it is measured in volts with a voltmeter connected across the two points. This concept is distinct from current, which is the actual flow of charge; from resistance, which is how much a component opposes that flow; and from power, which is the rate at which energy is transferred. So the difference in potential between two points is called voltage.

Voltage is the difference of electric potential between two points in a circuit. It represents the energy per unit charge that would be available to move charges from one point to the other, effectively pushing them through the circuit. This driving force is what causes current to flow when a path exists, and it is measured in volts with a voltmeter connected across the two points. This concept is distinct from current, which is the actual flow of charge; from resistance, which is how much a component opposes that flow; and from power, which is the rate at which energy is transferred. So the difference in potential between two points is called voltage.