Question

Name the physical quantity of which the unit is ampere:

• A. Current.
• B. Capacitance
• C. Charge
• D. Voltage

Answer 1

The correct option is A Current.

An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.
The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current is measured using a device called an ammeter.