To determine the correct unit of measurement for current, let's review the options provided:
a. Joules: Joules (J) are units of energy. They measure the amount of work done or heat transferred. This is not the correct unit for measuring current.
b. Coulombs: Coulombs (C) are units of electric charge. They measure the quantity of electricity transported in one second by a current of one ampere. This is related to current, but not the direct unit for measuring it.
c. Amperes: Amperes (A) are units of electric current. They measure the flow of electric charge per unit time. This is the standard unit for measuring current in the International System of Units (SI).
d. Volt-amperes: Volt-amperes (VA) are units of apparent power in an electrical circuit. This is the product of the voltage and current in a circuit and is used predominantly in the context of AC power. This is not the correct unit for measuring current.
After reviewing each option, we conclude that the correct unit of measurement for current is:
c. amperes
