The motor effect

Question 1

..What is the motor effect ?

Answer 1

When a current-carrying wire is put between magnetic poles, the magnetic field around the wire interacts with the magnetic field it has been placed in. This causes the magnet and the conductor to exert a force on each other - this is called the motor effect and can cause the wire to move

Question 2

Step 1-2
How would you experience the full force ?

Answer 2

1) To experience the full force, the wire has to be at 90 degrees to the magnetic field. If the wire runs parallel to the magnetic field, it won’t experience any force at all. At angles in between, it’ll feel some force

2) The force always acts at right angles to the magnetic field of the magnets and the direction of the current in the wire

Question 3

Step 3-5
- showing direction of force in horseshoe magnet

Answer 3

3) A good way of showing the direction of the force is to apply a current to a set of rails inside a horseshoe magnet
A bar is placed on the rails, which completes the circuit. This generates a force that rolls the bar along the rails.

4) The magnitude of the force increases with the strength of the magnetic field

5) The force also increases with the amount of current passing through the conductor

Question 4

The force acting on a conductor in a magnetic field depend on three things

Answer 4

F (N) = BIL

B = ( TESLA ) magnetic flux density = how many flux lines there are in a region = shows strength of the magnetic field

I = current ( A ) = size of current through the conductor

Length = (m) of conductor that’s in the magnetic field

When current is at 90 degrees to the magnetic field it is in, force can be calculated using that equation