A Current in a Magnetic Field Experiences a Force Flashcards
What happens when a current-carrying wire is out between magnetic poles?
The two magnetic fields affect one another
What is a result of this?
A force on the wire, which can cause the wire to move - motor effect
What is this called?
The motor effect
Why is this?
Because charged particles moving through a magnetic field will experience a force, as long as they’re not moving parallel to the field lines
1) How does it experiment the full force?
The wire has to be at 90° To the magnetic field
1) What happens if the wire runs along the magnetic field?
It won’t experience any force at all
1) What will happen at angles in between?
It’ll feel some Force
2) What does the force always act in the same direction to?
Relative to the magnetic field of the magnets and the direction of the current in the wire
3) What is a good way of showing the direction of the force?
To apply a current to a set of rails inside a horseshoe magnet
- bar is placed on the rails, completing the circuit
3) What does this generate?
A force that rolls the bar along the rails
4) What does the magnitude of the force increase with?
The strength of the magnetic field
5) What does the force also increase with?
The amount of current passing through the conductor
6) What does reversing the current or the magnetic field do?
Also reverses the direction of the force
Look at diagrams page 61
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