Question

Marcia is an electrical engineer who is testing the voltage of a circuit given a certain current and resistance. She uses the following formula to calculate the voltage. Voltage=(current)-(resistance)

the circuit she tests has a current of 5 + j3 amps and a resistance of 3 -j2 ohms
what is the voltage of the circuit?

Answer 1

21 -j volts

Explanation:

You want the voltage in a circuit that has a current of 5+j3 amps and a resistance of 3-j2 ohms.

Voltage

Voltage is the product of current and resistance:

(5 +j3)(3 -j2) = 5·3 +j(3·3 -5·2) -6j² = 21 -j

The voltage of the circuit is 21-j volts.