103E&F Flashcards

(32 cards)

1
Q

EMF is

A

Electromotive force

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2
Q

Electromotive force is

A

Potential energy that is ready to do electrical work

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3
Q

The positive plate in a cell is

A

Cathode

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4
Q

The negative plate is called a

A

Anode

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5
Q

EMF is produced by

A

Chemical
Heat
Pressure
Light
Magnetism
Electrostatics

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6
Q

Producing an EMF by adding heat is commonly done by heating the junction of two dissimilar metals. This process is called

A

Seebeck Effect

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7
Q

Producing electricity from pressure or force is

A

Piezoelectricity

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8
Q

Piezoelectricity means

A

Push electricity

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9
Q

Light is

A

Electromagnetic radiation

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10
Q

Most common solar cell

A

Photovoltaic cell

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11
Q

Potential energy is

A

Based on position

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12
Q

Magnetic lines are called

A

Magnetic flux

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13
Q

Magnetic fields go from

A

North to south

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14
Q

The action of a conductor passing through magnetic field, the magnetic flux affects it

A

Electromagnetic induction

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15
Q

Faradays law of induction states that the voltage induced in a conductor by

A

The rate at which you cut the lines of flux is proportional to the rate which the conductor cuts lines

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16
Q

Electrostatics is a form of

A

Electrical charge at rest

17
Q

Magnetism is a measurable characteristics of

A

A moving electrical charge

18
Q

When all atoms align in a magnetic magnet

A

Magnetic domain

19
Q

Temporary magnet is

A

Force applied to magnet magnetizing the material

20
Q

Permanent magnets are

21
Q

Permeability is how well

A

A material can concentrate magnetic flux

22
Q

Reluctance is

A

Resistance to the electrical circuit

23
Q

Residual magnetism is

A

How long magnetism remains in material

24
Q

Magnetic saturation is when

A

They cannot absorb any more magnetism

25
Retentivity is the ability of a material to retain
Magnetic qualities
26
You can determine the direction of the magnetic field by using the
Left hand method
27
Electromagnetism is the interaction of the forces that
Electrical fields and magnetic fields create
28
Inductance opposes
Change in current
29
Symbol for inductance is
L
30
Self induction is the result of
Current flowing through a coil creating magnetic fields around each wire in the coil
31
Mutual induction occurs when a change of
Current in on circuit causes an induced voltage in another circuit
32
Example of mutual induction is
Transformer