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Electromagnetic Induction - Coggle Diagram
Electromagnetic Induction
Definition
Production of an induced e.m.f. in a conductor when there is relative motion between conductor and a magnetic field or when the conductor is in a changing magnetic field
Magnetic flux
Magnetic field line that pass through as surface
When a piece of copper wire is moved across magnetic flux,
an e.m.f. is induced in the wire
When a bar magnet is moved toward or away from solenoid, the turns of the solenoid cut the magnetic field lines.
Factors Affecting the Magnitude of the induced e.m.f.
Straight wire and magnet
Speed of relative motion
Strength of the magnetic field
Solenoid and magnet
Speed of relative motion
number of turns of the solenoid
Strength of the magnetic field
Faraday's Law
The magnitude of the induced e.m.f. is directly proportional to the rate of cutting of magnetic f
Direction of Induced Current in a Straight and Solenoid
Fleming's right hand rule
Lenz's Law
The induced current always flows in a direction that opposes the change of magnetic flux that causes it
Direct Current Generator and Alternating Current Generator