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X-Ray 111 > Electrodynamics > Flashcards

Electrodynamics Flashcards

1
Q

The study of electric charges in motion

A

Electrodynamics

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2
Q

Electrons flow from

A

abundance to deficiency

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3
Q

The ability to do work because of a separation of charges

A

Electric potential

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4
Q

Electric potential is measured in

A

volts

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5
Q

Current is measured in

A

amperes

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6
Q

Resistance is measured in

A

ohms

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7
Q

What is the flow of charged particles

A

electric current

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8
Q

Electrons flow in one direction

A

Direct current

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9
Q

Electrons oscillate back and forth

A

Alternating current

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10
Q

4 things resistance depends on

A

Material, Length, Cross Sectional Area, Temperature

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11
Q

The unit of measure for frequency

A

Hertz

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12
Q

a device that produces electrons through a chemical reaction

A

Battery

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13
Q

A device like a battery that stores and electrical charge

A

Capacitor

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14
Q

“one way valve” - only allows electrons to flow in one direction

A

Diode

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15
Q

a section of special wire that quickly melts if the current flow rises excessively

A

Fuse

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16
Q

If the current flow rises, what stops the flow of electricity?

A

Circuit breaker

17
Q

a device designed to inhibit the flow of electrons

A

resistor

18
Q

an adjustable form of a resistor

A

rheostat

19
Q

a device that opens a circuit

A

switch

20
Q

a device that can increase or decrease voltage

A

transformer

21
Q

the process of connecting an electrical device to the earth via a conductor

A

grounding

22
Q

What is an example of an insulator?

A

Wood

23
Q

What is an example of a conductor?

A

Water

24
Q

The electrical resistance of wire increases as the diameter

A

decreases

25
Q

The unit of electric potential is the

A

volt

26
Q

mAs is a unit of

A

electric current

27
Q

The difference between DC and AC is

A

Direct current electrons flow in one direction

28
Q

Normal household electric is

A

120V, 60Hz, single phase

X-Ray 111 (5 decks)

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