Coulomb measures what quantity?

Coulomb measures what quantity?

• A. Magnetic flux
• B. Electrical charge transported in one second by a steady current of one ampere
• C. Capacitance
• D. Resistance

Answer: (B)

The Coulomb measures the quantity of electrical charge. It represents how much electric charge is present or transported. In circuits, current is the rate at which charge flows, with I = Q/t. So the amount of charge that passes a point when a current of one ampere flows for one second is Q = I·t = 1 A × 1 s = 1 coulomb. That direct link to a amount of charge moved makes the Coulomb the unit for electrical charge. Magnetic flux is measured in webers, not coulombs. Capacitance is measured in farads, and resistance is measured in ohms, so those options refer to different concepts and units.

The Coulomb measures the quantity of electrical charge. It represents how much electric charge is present or transported. In circuits, current is the rate at which charge flows, with I = Q/t. So the amount of charge that passes a point when a current of one ampere flows for one second is Q = I·t = 1 A × 1 s = 1 coulomb. That direct link to a amount of charge moved makes the Coulomb the unit for electrical charge.

Magnetic flux is measured in webers, not coulombs. Capacitance is measured in farads, and resistance is measured in ohms, so those options refer to different concepts and units.