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RC Circuits - Engineering

Q1:

Complex numbers can be added and subtracted but not multiplied or divided.

A True

B False

ANS:B - False

False : -
In complex numbers are addition, subtraction, multiplication and division.

For multiplication :
(a+ib).(c+id) = ac - bd + i(ad + bc).

For division :
(a+ib). (a+ib). (c-id)
(c+id). (c+id). (c-id)
= (ac + bd - i(bc - ad))
= (c2 + d2).