A small circular coil of 20 turns of wire lies in a uniform field of 0.5 T, so that the normal to the plane of the coil makes an angle of 60 degrees with the direction B (magnetic field with arrow over top). The radius of the coil is 4 cm, and it carries a current of 3 A. (a) what is the magnitude of the magnetic moment of the coil? (b) what is the magnitude of the torque exerted on the coil?

Solution Preview

(a)
The magnetic dipole moment of a coil is m = N?I?A, where N=20 is the number of turns, I = 3 A is the current, and A = pi?r^2 = 16pi cm^2 = 0.0016pi m^2 is the area of the coil, ...

Solution Summary

The solution examines the magnitude of the magnetic moment of the coil. The magnitude of the torque exerted on the coil is found.

... 2. A circular coil of radius 5mm and containing 500 turns has a resistance of 50Ω. The coil is placed in a magnetic field of 1.5T with the field direction ...

... r = qvB where r = radius of the circular path. ... point P), the magnitudes of the magnetic fields due to ... The direction of magnetic field due to the two conductors ...

... 2 : Arrangement of coils for mutual inductance maximum ... Fig. 1b : A typical magnetic field line as seen from A. ... above show a current carrying circular coil (blue ...

... A circular wire loop lies in the plane of the ... Sketch the changes in magnetic fields induced and the resultant ... The coil spins in a magnetic field of 0.80 T at a ...

... If the wire is coiled into a spiral, called a solenoid, then the magnetic field... Exercise 1. The magnetic field perpendicular to a circular coil of 5 turns ...

... Now replace square loop with circular loop == Very large number of conductors side by side ... Figure 1: Magnetic field on axis of a coil carrying current. ...

... of current through one coil induces 2 volts across another coil. ... m/s) along +x axis, if the magnetic field ( 2 T ... Calculate the radius of resulting circular path ...

... If the electron is moving in a circular manner, the ... a repulsive force between two magnetic fields to push ...field that opposes the magnetic field generating the ...

... current in the primary coil is 9.0 A, then the secondary coil current is a ... vector B at any given point is tangential to the circular magnetic field line passing ...