The Figure Shows a Bar Magnet Moving Vertically Upward Toward

question 1356

Multiple Choice

The figure shows a bar magnet moving vertically upward toward a horizontal coil.The poles of the bar magnets are labeled X and Y.As the bar magnet approaches the coil it induces an electric current in the direction indicated on the figure (counter-clockwise as viewed from above) .What are the correct polarities of the magnet?

• A) X is a south pole, Y is a north pole.
• B) X is a north pole, Y is a south pole.
• C) Both X and Y are north poles.
• D) Both X and Y are south poles.
• E) The polarities of the magnet cannot be determined from the information given.

---

Definitions:

Intercostal Muscles

Muscles located between the ribs that play a key role in the mechanical aspect of breathing by assisting in the expansion and contraction of the chest cavity.

Change the Size

A process or action that results in an alteration of the dimensions, proportions, or magnitude of an object or entity.

Transverses Abdominis Muscle

A muscle layer of the anterior and lateral abdominal wall which is deep to the internal oblique muscle.

External Oblique Muscles

Muscles located on the side and front of the abdomen, which help in rotating the trunk and pulling the chest downwards.