Flashcards in The motor effect Deck (6)
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1
What happens when a current flow through a wire?
a magnetic field is produced around the wire
this can be increased by coiling the wire around a soft iron core
e.g. electromagnets are used on cranes for lifting iron
2
What is the motor effect?
a motor can be made using a coil of wire that is free to rotate between two opposite magnetic poles
the size of the force is greatest when the wire is perpendicular to the the magnetic field
3
How can the motor effect be increased?
increasing the strength of the magnetic field
increasing the size of the current
4
What happens if the conductor is parallel to the magnetic field?
it will not experience a force
5
What happens to the direction of the force is the magnetic field is reversed?
the force will be reversed
6
