You may have heard of several sorts of numbers in mathematics, such as natural numbers, real numbers, whole numbers, imaginary numbers, and so on. Similarly, a complex number is a sort of number that is expressed as a+ib, where a and b are real integers while i is an imaginary number commonly known as ‘iota’. To help you comprehend complex numbers, consider the following example: 5+2i’ is known to be a complex number, in this example 5 is known as a real number whereas the term 2i is known as an imaginary number.

**Difference Between Real Numbers & Complex Numbers**

Complex Numbers – It is a form of a number that is expressed as a+ib, where a and b are real numbers while the term i is known to be an imaginary number also known as ‘iota’. 5 +2i,’ for example, is a complex number in which 5 is the real number and 2i is known to be the imaginary number.

Real Numbers – Real numbers are a blend or collection of both rational as well as irrational numbers. Real numbers include the following: 34, -13, 7.99, 22/7, 3.14, and so on.

**Examples **

In the examples given below, we will learn to separate the imaginary and the real part of all the given complex numbers.

- 4+2i – In this complex number, the term 4 is known as the real number and the term which is tagged along with i that is 2i is known as an imaginary number.
- 3i – In this given complex number, we can see that there are no real numbers, there is only one element that is tagged along with i which is 3i which is the imaginary number.
- 9i-2 – In this given complex number, the term 9i is the imaginary number and -2 is the real number.

**Is Zero a Complex Number?**

In mathematics, zero is known to be a complex number. As a result, the right response is “YES.” Note: Every conceivable value or no in mathematics is defined as a complex number, and the reason behind this is because a complex number is known to be the primary branch of all other number groups, and complex numbers have two branches: real numbers as well as imaginary numbers.

**Uses of Complex Numbers**

Complex numbers are employed in electronics and electromagnetism. A complex number is a combination of two real numbers that makes them better to handle. Voltage (V) and current (I), for example, describe the state of a circuit element in electronics (I).

Capacitance (c) and inductance (L) are two properties of circuit components that characterize how effectively the circuit resists changes in V and I. Rather than using V and I to describe the state of the circuit element, it may be stated as z = V + Ii. Electricity rules may then be stated using complex number multiplication as well as addition operation.

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