Voltage is defined as the difference in electric potential between two points; what is the two quantities being compared?

Voltage is defined as the difference in electric potential between two points; what is the two quantities being compared?

• A. Electric potential at two different points
• B. Electric current at two points
• C. Charge at two points
• D. Magnetic flux at two points

Answer: (A)

Voltage measures the difference in electric potential between two points, so the two quantities being compared are the electric potential at each of those points. It’s about how much potential energy per unit charge would be gained or lost when moving a test charge from one location to the other. The other options refer to different physical quantities—current, charge, and magnetic flux—not the potential at points—so they don’t define voltage.

Voltage measures the difference in electric potential between two points, so the two quantities being compared are the electric potential at each of those points. It’s about how much potential energy per unit charge would be gained or lost when moving a test charge from one location to the other. The other options refer to different physical quantities—current, charge, and magnetic flux—not the potential at points—so they don’t define voltage.