Current flow can be expressed in terms of ___?

Current flow can be expressed in terms of ___?

• A. amperes (A)
• B. coulombs (C)
• C. volts (V)
• D. ohms (Ω)

Answer: (B)

Current flow is the amount of electric charge moving through a conductor over a period of time. The quantity of charge is measured in coulombs, and the relationship Q = I t ties charge to current and time. This means the total charge that passes through in a given interval is described in coulombs, since I = Q/t and one ampere equals one coulomb per second. Voltage and resistance describe potential difference and opposition to flow, not the amount of charge moved, so they aren’t used to express how much charge has flowed.

Current flow is the amount of electric charge moving through a conductor over a period of time. The quantity of charge is measured in coulombs, and the relationship Q = I t ties charge to current and time. This means the total charge that passes through in a given interval is described in coulombs, since I = Q/t and one ampere equals one coulomb per second. Voltage and resistance describe potential difference and opposition to flow, not the amount of charge moved, so they aren’t used to express how much charge has flowed.