Which direction do magnetic field always point in?
from north to south
2 of 10
Relate current to electromagnetism
The > the current the stronger the magnetic field
3 of 10
What does the First finger show in Flemings left hand rule?
Field
4 of 10
What does the thumb show in Flemings left hand rule?
Motion
5 of 10
What does the second finger show in Flemings left hand rule?
Current
6 of 10
State four factor which speed up a DC electric motor
More current, More turns on the coil, Stronger magnetic field and a soft ion
7 of 10
How does a loud speaker work?
AC electrical signals are sent from an amplifier to a coil where the magnets cause a force making the coil move. This makes the cone vibrate and create sound
8 of 10
What are the three ways to induce a current?
Move magnet, Move coil and change magnetic field
9 of 10
The size of the voltage in an electro magnet is increase if..
The field is stronger, the change is faster and the length of wire is increased
10 of 10
Other cards in this set
Card 2
Front
Which direction do magnetic field always point in?
Back
from north to south
Card 3
Front
Relate current to electromagnetism
Back
Card 4
Front
What does the First finger show in Flemings left hand rule?
Back
Card 5
Front
What does the thumb show in Flemings left hand rule?
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