Question

If a voltage of 2+5j and another voltage of 3+ 6j flows through two different resistors, connected in series, in a circuit, find the total voltage in the circuit.

(a) 2+5j V

(b) 3+6j V

(c) 5+11j V

(d) 5+10j V

The question was asked by my college professor while I was bunking the class.

This intriguing question comes from Representation of an Alternating Quantity by a Phasor in section Alternating Voltage and Current of Basic Electrical Engineering

Answer 1

The correct answer is (c) 5+11j V

The explanation: The total voltage in the circuit is the sum of the two voltages where we add the real parts and imaginary parts separately.

Therefore, Vtotal= 5+11j V.