Question

What is the S.I unit of ampere?
A. Ampere
B. Charge
C. Coulomb
D. Volt

Answer 1

Hint: In order to get the unit of current you just have to learn that because it is based in the name of a scientist. You can also use the various formulas of current and assign its units according to those but those units also will be equal to the unit based on the famous scientist who found one of the four equations in Maxwell’s equations.

Complete step by step answer:

Electric Current - The electrical current is the electrical charge flow in the circuit. Specifically, electrical current is the rate of charge flow past the point in the electrical circuit. The charge can be negatively charged electrons or positive charge carriers, like protons, positive ions or holes.

Current can be written as a resistance voltage, which is volts on ohm, and is often called ampere. The new unit is named after the scientist Andre-Marie Ampere.
One ampere is defined as the flow of electric charge of one coulomb per second.
So, the unit of current is Ampere.
Hence, the correct answer is option A.

Note:
This is one of the very common units. Ampere it’s a unit of current. Sometimes also called ”amp” as the unit of electric current given by the international system of units. When one coulomb of electric charge is flowed through a wire in one second we say that the current through the wire is one ampere.