1. A circular loop of area A, carries a current I. It is placed in a uniform mag

Question

1. A circular loop of area A, carries a current I. It is placed in a uniform magnetic field B pointing NE direction. From the different loop orientations THETA = 0, 45, 90, 135, 180, 225, 270, and 315, with respect to the x-axis, which orientation has the lowest potential energy and which has the highest? In which direction does the loop have a tendency to align?

2.In nature, there are two types of electric point charges, positive and negative. Are there any corresponding counterparts in magnetism? In other words, do magnetic point charges exist in nature? What is the smallest magnetic configuration found in nature?

Explanation / Answer

Potential energy = -u.B or - uBCos theta

Lowest Potential Energy will be in the orientation when theta = 0 .
Highest Potential Energy will be in the orientation when theta= 180

Amagnetic monopoleis a hypotheticalparticleinparticle physicsthat is an isolatedmagnetwith only one magnetic pole (anorth polewithout asouth poleor vice-versa)

Smallest magnetic configuration is magnetic dipole

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