Question

The physical quantity whose unit is coulomb per second is ___.

• A. current
• B. potential difference
• C. resistance
• D. resistivity

Answer 1

The correct option is A

current

Current is defined as the rate of flow of charge and is mathematically expressed as $I=\frac{Q}{t}$ where $Q$ is the charge and $t$ is the time. The SI unit of charge is coulomb and that of time is second. So, the SI unit of current is coulomb per second, generally known as ampere.