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OUTCOME
By the end of the lesson you will recognise and explain the force created by a charged particle and a current carrying wire in a magnetic field.
The magnetic force on a moving charge is a result of the size of the charge (q), the strength of the field (B) and the speed of the particle (v). F = q v x B. The 'v x B' means cross product; they are the perpendicular components of these vectors.
Current in a wire is equivalent to a positive charge travelling at speed v into a field. The rule F = B x I l, will give the magnitude of the force and the right hand slap rule will give the direction
LEARNING TASKS
Explain
1. Draw a hand and label the correct parts to use the RH slap rule for F = qvxB
Explore and Elaborate
What's really going on here? Watch this video for a bit more detail
Prac: Magnetic swings
Activity: Electrons in Magnetic Fields
Evaluate
Jac Text Book - 2, 4, 5, 7, 8
2.Try this
3. Draw a hand and label the correct parts for the RH slap rule for F = BxIl.
4. Try these
5. Why would a moving electron experience a force in a magnetic field?
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