Physics Flashcards

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1
Q

If 2 neutral objects are rubbed together

A

One negative electron from the first object will transfer to the second object

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2
Q

Objects lower on the list have a _____ hold on electrons. When these objects gain electrons they become_____ charged

A

Strong
Negatively

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3
Q

The objects higher on the electrostatic series have a _____ hold on electrons. When these objects lose there electrons they become ____ charged

A

Weak
Positively

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4
Q

Opposite charged

A

Attract

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5
Q

Like charges

A

Repel

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6
Q

How to find the charge of something

A

P-E

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7
Q

If objects have not been rubbed they are

A

Neutral

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8
Q

When 2 objects are rubbed together electrons move from

A

1 object to another

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9
Q

3 ways to charge an object is

A

Conduction
Induction
Friction

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10
Q

Static electricity is an electrical charge that tends to stay on

A

Objects surface

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11
Q

Only ____ can move

A

Electrons

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12
Q

4 components of a circuit are

A

Sources
Connectors
Loads
Control devices

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13
Q

Electrons can flow through

A

Closed circuits

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14
Q

Electrons cannot flow through

A

Open circuits

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15
Q

Electrical current is the flow of

A

Electrons in a circuit

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16
Q

As resistant increases

A

Current decreases

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17
Q

Increase in voltage =

A

Increase in current

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18
Q

Insulators have a…

A

High resistance

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19
Q

Conductors have a….

A

Low resistance

20
Q

Resistance is measured in

A

(The Libra looking sign)

21
Q

Voltage is measured is

A

Volts (v)

22
Q

Current is measured in

A

Amps (a)

23
Q

Triangle formula

A

V,I,R

24
Q

Voltage formula

A

V= IxR

25
Q

V total formula=

A

V1+V2+V3

26
Q

When measuring current the formula is

A

I1= I2= I3

27
Q

When measuring voltage the formula is

A

Vt=
V1=
V2=

28
Q

Voltage must be placed _____ around the devices you are measuring

A

Parallel

29
Q

Voltage is the measure of the difference in electrical energy between….

A

2 parts of a circuit

30
Q

Current is the flow of electrical charge in a

A

in a circuit

31
Q

Parallel has_____ pathway for electrons

A

More then 1

32
Q

Series has ________ pathways for electrons to move

A

One pathways

33
Q

For short circuits, the electrons will always take the path of

A

Least resistance

34
Q

Induce means electrons transfer without

A

Contact

35
Q

Static electricity means

A

Non-moving electricity

36
Q

Static means

A

Non-moving

37
Q

Examples of semiconductors

A

Some non-metals like silicon and some metals

38
Q

Semiconductors are materials in which electrons can move

A

Fairly well between atoms

39
Q

Examples of insulators

A

Wood, rubber, plastic (non-metals)

40
Q

Insulators are materials in which electrons

A

cannot move easily from one atom to another

41
Q

Examples of conductors

A

Metals, copper, aluminum

42
Q

Conductors are materials in which electrons can

A

move easily between atoms

43
Q

Grounding is making an object neutral by

A

Gaining or losing electrons from the ground

44
Q

Something negative comes in contact with a neutral object…

A

2 negative electrons from the second object will move to the bottom of the leafs

45
Q

If something positive come in contact with a neutral object….

A

2 negative electrons will move from the second object to the first one and 2 negative ones come up from the bottom