Resonance 90 degree phase shift

1. What should the phase shift be at resonance?
2. What is resonance shift?
3. How do you find the phase angle of resonance?

What should the phase shift be at resonance?

At resonance the phase angle between the displacement and applied force is either +90-degrees or -90-degrees. The imaginary number, either +I or -I, of course represents a plus or minus 90-degree phase shift.

What is resonance shift?

The mechanism is based on the classical resonance and experimentally observed phenomena that the resonance frequency of a neuron shifts as a function of membrane depolarization. As the neurons receive varying sub-threshold input, their natural frequency is shifted in and out of its resonance range.

How do you find the phase angle of resonance?

At resonance the inductive reactance and capacitive reactance add to zero: ϕ=tan−1[(XL−Xc)/R]=0.