Electricity and Magnetism Flashcards

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1
Q

If the charge is stationary and concentrated somewhere we have _____ electricity.

A

Static

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2
Q

If the charge is flowing we have _______ electricity

A

Current

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3
Q

A common way of creating static electricity is by ?

A

Friction

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4
Q

What happens while two objects rub together that create static electricity ?

A

Electrons move from one object to the other

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5
Q

The amount of electrical energy carried by the current ?

A

Voltage

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6
Q

Resistance (collisions in a circuit) transforms electrical energy into ?

A

Heat energy

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7
Q

As particles move through a circuit, their progress is hindered by collisions . This is called __________

A

Resistance

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8
Q

The rate at which energy is transformed from one thing to another ?

A

Power

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9
Q

Materials that allow current to flow are called ?

A

Conductors

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10
Q

Materials that do not have free electrons (electrons cannot flow) are called ?

A

Insulators

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11
Q

Insulators can build up static charges as _______ do not flow freely in an insulator

A

Electrons

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12
Q

Why are metals good conductors ?

A

Metals have free electrons in their outer valence shell, free electrons carry a charge therefore a current can flow

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13
Q

Earthing allows large electrical charges to travel safely into the ______ ?

A

Ground

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14
Q

What happens when a charged object comes into contact with a neutral object ?

A

Some of it’s charge (electrons) can be transfered to the other

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15
Q

An object will be positively or negatively charged if it ?

A

Gains or losses electrons

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16
Q

True or False:

Only electrons can move ?

A

True

17
Q

Any charged object will attract a _______ object.

A

Neutral

18
Q

Current:

Symbol:
Unit:

A

Symbol: I
Unit: Ampere

19
Q

Energy:

Symbol:
Unit:

A

Symbol: E
Unit: Joule

20
Q

Power:

Symbol:
Unit:

A

Symbol: P
Unit: Watts

21
Q

Voltage

Symbol:
Unit:

A

Symbol: V
Unit: Volts

22
Q

Time:

Symbol:
Unit:

A

Symbol: t
Unit: Seconds

23
Q

Components in a ________ _________ are arranged so current must go through all components

A

Series Circuit

24
Q

Voltage in a series Circuit will be ?

A

Shared between the components

25
Q

Current in a series Circuit will ?

A

Remain the same

26
Q

Components in a ________ ________ allow 2 or more pathways for current to flow.

A

Parallel Circuit

27
Q

Voltage in a parallel circuit will ?

A

Remain the same

28
Q

Current In a parallel circuit will ?

A

Be shared between the components

29
Q

DC:

A

Direct Current

30
Q

The measurement of electrons moving through a circuit per second ?

A

Current

31
Q

Ohms Law:

A

V=IxR

32
Q

Working for Power:

A

P=VxI