Question

Define quantity of charge. States its practical unit and defines it.

Answer 1

Step 1: Quantity of charge:

1. Quantity of charge refers to the number of charges (electrons) that go from a higher potential to a lower potential.
2. It denotes the entire quantity of electricity flowing via a conductor.
3. The letter denotes it is $Q$.
4. Charge of an electron $1.6\times {10}^{-19}C$

Step 2: The practical unit of quantity of charge:

1. The SI unit of charge is the $coulomb$.
2. The $ampere$ is used to calculate the amount of$coulomb$ flows through a point in the circuit.
3. $Onecoulomb$ is the amount of charge that flows in one second when the current is $oneampere$.

Step 3: Coulomb:

1. The $coulomb$ (represented via way of means of $C$) is the usual unit of electrical charge within the International System of Units (SI).
2. The amount of electrons in one coulomb charge is about the same as $6.24\times {10}^{18}$ .