103E&F Flashcards
EMF is
Electromotive force
Electromotive force is
Potential energy that is ready to do electrical work
The positive plate in a cell is
Cathode
The negative plate is called a
Anode
EMF is produced by
Chemical
Heat
Pressure
Light
Magnetism
Electrostatics
Producing an EMF by adding heat is commonly done by heating the junction of two dissimilar metals. This process is called
Seebeck Effect
Producing electricity from pressure or force is
Piezoelectricity
Piezoelectricity means
Push electricity
Light is
Electromagnetic radiation
Most common solar cell
Photovoltaic cell
Potential energy is
Based on position
Magnetic lines are called
Magnetic flux
Magnetic fields go from
North to south
The action of a conductor passing through magnetic field, the magnetic flux affects it
Electromagnetic induction
Faradays law of induction states that the voltage induced in a conductor by
The rate at which you cut the lines of flux is proportional to the rate which the conductor cuts lines
Electrostatics is a form of
Electrical charge at rest
Magnetism is a measurable characteristics of
A moving electrical charge
When all atoms align in a magnetic magnet
Magnetic domain
Temporary magnet is
Force applied to magnet magnetizing the material
Permanent magnets are
Everlasting
Permeability is how well
A material can concentrate magnetic flux
Reluctance is
Resistance to the electrical circuit
Residual magnetism is
How long magnetism remains in material
Magnetic saturation is when
They cannot absorb any more magnetism
Retentivity is the ability of a material to retain
Magnetic qualities
You can determine the direction of the magnetic field by using the
Left hand method
Electromagnetism is the interaction of the forces that
Electrical fields and magnetic fields create
Inductance opposes
Change in current
Symbol for inductance is
L
Self induction is the result of
Current flowing through a coil creating magnetic fields around each wire in the coil
Mutual induction occurs when a change of
Current in on circuit causes an induced voltage in another circuit
Example of mutual induction is
Transformer
