Exam 26: The Magnetic Field

Use the diagram for the next problem. -A circular current loop lies in the xy plane and has radius R = 10 cm.The loop has 20 turns and carries a current I = 4 A.The magnetic dipole of the loop is

One Tesla is equal to

A cyclotron

A small permanent magnet is placed in a uniform magnetic field of magnitude 0.35 T.If the maximum torque experienced by the magnet is 0.50 N · m,what is the magnitude of the magnetic moment of the magnet?

A compass needle is in a homogeneous magnetic field with its south pole pointing in the positive direction of .The net force on the compass needle is

All of the charged particles that pass through crossed electric and magnetic fields without deflection have the same

An alpha particle with a charge 2e and mass 4m is moving with velocity v when it enters a magnetic field B at right angles to its direction of motion.A deuteron of charge e and mass 2m also enters the field in the same direction and the same speed.Calculate the difference in radius of motion between the alpha particle and the deuteron in the magnetic field region.

The angle through which the pointer on a galvanometer rotates is

A wire 30 cm long with an east-west orientation carries a current of 3.0 A eastward.There is a uniform magnetic field perpendicular to this wire.If the force on the wire is 0.18 N upward,what are the direction and magnitude of the magnetic field?

The region of space around a moving proton contains

A deuteron is moving with a speed of 2.0 $\times$ 10⁶ m/s at right angles to a magnetic field.The field is uniform,with magnitude B = 0.40 T.The mass and charge of a deuteron are 3.3 $\times$ 10^-27 kg and 1.6 $\times$ 10^-19 C,respectively.The radius of the deuteron orbit is approximately

An electron is accelerated from rest by an electric field.After the acceleration,the electron is injected into a uniform magnetic field of 1.27 $\times$ 10^-3 T.The velocity of the electron and the magnetic field lines are perpendicular to one another.The electron remains in the magnetic field for 5.00 $\times$ 10^-9 s.The angle between the initial electron velocity and the final electron velocity is

The phenomenon of magnetism is best understood in terms of