A Rigid Circular Loop Has a Radius of 0

question 5

Essay

A rigid circular loop has a radius of 0.20 m and is in the xy-plane. A clockwise current I is carried by the loop, as shown. The magnitude of the magnetic moment of the loop is
0.75 A · m². A uniform external magnetic field, B = 0.20 T in the positive x-direction, is present. (a) What is the current in the loop?
(b) Find the magnitude of the magnetic torque exerted on the loop.
(c) If the loop is released from rest, in what direction will points a and c initially move?

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Definitions:

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any learning being involved.

Intermittent Pairing

A learning process in classical conditioning where the conditioned stimulus is sometimes, but not always, paired with the unconditioned stimulus, leading to a learned association.

Learned Response

A reaction that is developed as a result of experience.