Phasor Diagrams

Author:Matthew Kushner

Below is a phasor diagram. The blue and red vectors are complex numbers. Each one is associated with a wave. Answer the questions below.

Vary the length of the red and blue vectors with the sliders. What is the relationship between the red vector and the amplitude of the wave?

Select all that apply

A
Modulus of red vector equals amplitude of wave.
B
Modulus of red vector equals twice the amplitude of the wave.
C
Modulus of red vector has no relationship with the wave.

Check my answer (3)

Move the two complex vectors. The arguments of the vectors are shown by the vectors. What is the relationship between the vector angle and the phase shift of the waves?

Select all that apply

A
Vector angle is 1/2 the phase shift.
B
Vector angle equals phase shift.
C
No relationship.

Check my answer (3)

Now turn on the add waves button. The two vectors are added together. What is the relationship between the vectors magnitude and the wave sum?

Select all that apply

A
Vector modulus is twice the amplitude of the sum wave.
B
Vector magnitude modulus equals sum wave amplitude
C
Vector modulus is 1/2 the amplitude of the sum wave.

Check my answer (3)

Phasor Diagrams

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