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Week 10 Quiz
Enter you Surname starting with a Capital letter (e.g. Urminsky)
A circular loop of wire of radius 0.5 m is in a uniform magnetic field of 0.3 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is at 30 degrees to the magnetic field?
0.41 m N
0.47 m N
0.52 m N
A charged particle, of charge e, is observed traveling in a circular path in a uniform magnetic field. If instead the particle carried a charge of 2e, the radius of the circular path would have been
twice the original radius
four times the original radius
one-half the original radius
one-fourth the original radius
A long straight wire carries current towards the east. A proton moves towards the east alongside and just south of the wire. What is the direction of the force on the proton?
There is not force
Two long parallel wires carry currents of 5.0 A and 8.0 A in opposite directions. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.
0.000027 N attractive
0.000072 N attractive
0.000027 N repulsive
0.000072 N repulsive
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