Electric Fields Flashcards

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1
Q

What happens when 2 like charges are near each other ?

A

Repel each other

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2
Q

What happens when 2 opposite charges are near each other ?

A

Attract to each other

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3
Q

What happens when 2 charges are put further apart ?

A

The force between them will decrease

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4
Q

What is the unit for charge ?

A

Coulombs ( C )

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5
Q

What does it mean when the Force between 2 charges is positive/negative ?

A

Depending on charges
2 pos/neg -> positive force, repel
1 pos + 1 neg -> negative force, attract

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6
Q

What is the definition for Electric field ?

A

Force per unit positive charge on a small test mass

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7
Q

What does a uniform electric field look like ?

A

Straight lines from pos to neg
e- going to pos
p going to neg

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8
Q

In E = V / d
what is d

A

The distance between charged plates

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8
Q

How to calculate electric field at a point ?

A

Find the electric charge at that point
or others and then solve via cosine rule or pythagoras

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9
Q

What is the definition for electric potential ?

A

Work done per unit positive charge when moving a small positive test charge from infinity to the point

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9
Q
A
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