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Worksheet: Magnetic Force on a Current-Carrying Wire

1. A wire 36 m long carries a current of 22 A from west to east. Find the magnetic force on the wire if the magnetic field of Earth at this location is directed from south to north and has a magnitude of . (See p. 774 of Holt for the right hand rule to determine direction.)

Using your right hand, point your thumb to the east and your fingers north. Your palm points up, so the force is up.

2. A wire 1.0 m long experiences a magnetic force of 0.50 N due to a perpendicular uniform magnetic field. If the wire carries a current of 10.0 A, what is the magnitude of the magnetic field?

3. The magnetic force acting on a wire that is perpendicular to a 1.5 T uniform magnetic field is 4.4 N. If the current in the wire is 5.0 A, what is the length of the wire that is inside the magnetic field?

4. A 2.5 N magnetic force acts on a 475 m wire that is perpendicular to a 0.50 T magnetic field. What is the current in the wire?

5. The magnetic force on a straight 0.15 m segment of wire carrying a current of 4.5 A is 1.0 N. What is the magnitude of the component of the magnetic field that is perpendicular to the wire?