Question

What is the unit of electric charge in the SI system?
A. Coulomb
B. Volt
C. Watt
D. Ampere

Answer 1

Hint: To solve this problem we should know about the International system of units$\left( {SI} \right)$Unit, fundamental unit, fundamental quantity, Derived unit , Derived quantity, Electric charge, using this information we can easily approach our answer.

Complete step-by-step answer:
The international system of units abbreviated as SI, is a scientific practice of expressing the magnitude or quantities of important natural phenomena. There are seven basic units in the system, from which other units are derived.
The first is the number which indicates the magnitude of quantity and second indicates the standard.
Example:
$
  3 \\
   \downarrow \\
  magnitude \\
   \downarrow \\
    \\
$
i.e. how many times of standard unit.

Meter
$ \downarrow $
Name of unit (standard)

Unit: The standard used for measurement of a physical quantity is called unit of the quantity.
Ex: 3 meter is the length of the table. Here meter is the unit used for the measurement of the length. Units are further subdivided into fundamental units and Derived units.
Fundamental unit: The units used to measure fundamental quantities are known as fundamental units.
Fundamental Quantities: Fundamental Quantities are the Physical quantities which do not rely on any other physical quantities for their measurement are known as fundamental quantities.
Derived units: Derived units are defined as units used to measure derived quantities are called derived units.
Derived Quantities: Physical quantities which rely on one or more fundamental quantities for their measurement are called derived quantities.
So, the correct answer is option A. Coulomb


Note - Electric charge is defined as physical property which experiences a force when put down in an electromagnetic field. Electric charge is of two types positive and negative, like charge repels each other and unlike charge attracts each other. For charge the SI unit is Coulomb and its symbol is C.