Question

Why does alternating current not show magnetic effects?

Answer 1

Magnetic effects:
The passage of electric current from the wire shows the magnet's behavior. For example, a magnetic compass and an electric motor.

Alternating current shows magnetic effects:
Due to the presence of electric current or charge in motion, there is an existence of a magnetic field. The variation in the rate of charges motion shows the presence of alternating current.
An alternating current generates the field lines as the direction of magnetic field lines along with the magnitude varies. So, alternating current shows the magnetic effects.

Thus, the above statement an alternating current does not show magnetic effects is false.