Revision as of 08:08, 11 March 2010

buiding electric mototrs
recall that a current-carrying wire placed in a magnetic field, experiences an elecromagnetic force on it
the direction of the electromagnetic force acting is given by the Fleming's left hand rule

Specification References

6.11 appreciate that there is a force on a charged particle when it moves in a magnetic field as long as its motion is not parallel to the field
6.12 recall that a force is exerted on a current-carrying wire in a magnetic field, and how this effect is applied in simple d.c.electric motors and loudspeakers
6.13 use the left hand rule to predict the direction of the resulting force when a wire carries a current perpendicular to a magnetic field
6.14 recall that the force on a current-carrying conductor in a magnetic field increases with the strength of the field and with the current

@@ Line 10: / Line 10: @@
 *
 ==Main Body of Lesson==
-* Discuss why the wire moves when current is flowing through it: the magnetic field of the permanent magnet reacts with the magnetic field of the current in the wire.
 *
 ==Plenary==
 *