Electromagnetism 2 Mind Map
17/06/2021 1:37:06 PM
Torque
DC and AC Generators
DC Motors
The turning effect of a force. It
causes rotation about a pivot.
Turn movement into
electrical current
Turn electrical current into
movement
Force: constant size but changes
direction every half cycle
DC: Split Ring Commutator
Torque: constant direction but
continually changes size.
AC: Slip Ring Commutator
Making Magnetic Fields
Current
Right Hand Grip
Solenoid
T he Motor Effect
A current carrying conductor in a
magnetic field experiences a force.
Electromagnetism
Induction
Faraday’s Law: The EMF induced in a wire or
coil is equal to the rate of change of magnetic flux.
Lenz’s Law : An induced current flows in a
direction that opposes the change that produced it.
Current Carrying W ire and a Magnet
Parallel Current Carrying W ires
Right Hand Rule
1
Electromagnetism 2 Mind Map
17/06/2021 1:37:07 PM
Transformers
2