Difference between revisions of "4-ELM-03"
From MrReid.org Wiki
| Line 2: | Line 2: | ||
* recall that a current-carrying wire placed in a magnetic field, experiences an elecromagnetic force on it | * 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 | * the direction of the electromagnetic force acting is given by the Fleming's left hand rule | ||
| + | ==[[Specifications|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 | ||
| + | ==Starter== | ||
| + | * | ||
| + | ==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== | ||
| + | * | ||
| + | |||
| + | ==Homework== | ||
| + | * Complete Physics texbook - page 211 Q 1-3, page 213 Q1-3 | ||
| + | |||
| + | =Additional Information= | ||
| + | ===Resources Required=== | ||
| + | * building electric motors kits | ||
| + | |||
| + | ===Textbook References=== | ||
| + | * ''None'' | ||
| + | |||
| + | ===Website References=== | ||
| + | * None | ||
| + | |||
| + | ===Skills Addressed=== | ||
| + | |||
| + | ===Safety/Hazards=== | ||
| + | * With high currents the wires may get hot. | ||
| + | |||
| + | ===Notes=== | ||
| + | * ''None'' | ||
| + | [[Category:Forces & Matter]] | ||
| + | [[Category:Practical skills - Obtaining]] | ||
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
Contents
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
Starter
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
Homework
- Complete Physics texbook - page 211 Q 1-3, page 213 Q1-3
Additional Information
Resources Required
- building electric motors kits
Textbook References
- None
Website References
- None
Skills Addressed
Safety/Hazards
- With high currents the wires may get hot.
Notes
- None
