One Ampere equals how many Coulombs per second?

One Ampere equals how many Coulombs per second?

• A. 1 C/s
• B. 1 J/s
• C. 1 V
• D. 1 J/C

Answer: (A)

Electric current is the rate at which charge flows past a point. If one coulomb of charge passes a point in one second, the current is one ampere. Therefore, one ampere equals one coulomb per second (1 C/s). The other options describe different quantities: joules per second is power (watts), volts measure potential difference, and joules per coulomb is a volt. A quick intuition: a stream carrying about 6.24×10^18 elementary charges every second corresponds to 1 coulomb per second, i.e., 1 ampere.

Electric current is the rate at which charge flows past a point. If one coulomb of charge passes a point in one second, the current is one ampere. Therefore, one ampere equals one coulomb per second (1 C/s). The other options describe different quantities: joules per second is power (watts), volts measure potential difference, and joules per coulomb is a volt. A quick intuition: a stream carrying about 6.24×10^18 elementary charges every second corresponds to 1 coulomb per second, i.e., 1 ampere.