Flashcards in The motor effect Deck (6)
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
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
How can the motor effect be increased?
increasing the strength of the magnetic field
increasing the size of the current
What happens if the conductor is parallel to the magnetic field?
it will not experience a force
What happens to the direction of the force is the magnetic field is reversed?
the force will be reversed