First slide

Phasors and Phasor Diagrams

Question

A 220 V 50 Hz AC source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit?

Moderate

A

10 A
B

5 A
C

33.3 A
D

3.33 A

Solution

$i = \frac{220}{\sqrt{(20)^{2} + (2 \times π \times 50 \times 0 .2)^{2}}} = \frac{220}{66} = 3 .33 A$

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