conductors and insulators

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23 Terms

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atomic structure

The electrical nature of matter is inherent in

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electric charge

By adding or removing electrons from matter it will acquire a net _____ with magnitude equal to e times the number of electrons added or removed, N

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๐‚๐จ๐ฎ๐ฅ๐จ๐ฆ๐› (๐‚)

SI Unit of Electric Charge:

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positive charge

The body that loses electrons has an excess of

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negative charge.

while the body that gains electrons has an excess of

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constant

During any process, the net electric charge of an isolated system remains

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repel

Like charges

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attract each other

unlike charges

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ELECTRICAL CONDUCTORS.

Substances that readily conduct electric charge are called

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ELECTRICAL INSULATORS

Materials that conduct electric charge poorly are called

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positive charge

The negatively charged rod induces a slight _______ on the surface of the plastic.

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COULOMBโ€™S LAW

The magnitude of the electrostatic force exerted by one point charge on another point charge is directly proportional to the magnitude of the charges and inversely proportional to the square of the distance between them.

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TEST CHARGE

should have a small magnitude so it doesnโ€™t affect the other charge

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electric field

exists at a point is the electrostatic force experienced by a small test charge placed at that point divided by the charge itself:

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newton per coulomb (N/C)

SI Units of Electric Field

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VECTORS

Electric fields from different sources ADD AS

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test charge

The electric field does not depend on the

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ELECTRIC FIELD LINES or LINES OF FORCE

provide a map of the electric field in the space surrounding electric charges.

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Electric field lines

always begin on a positive charge and end on a negative charge and do not stop in midspace.

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proportional

The number of lines leaving a positive charge or entering a negative charge is ______ to the magnitude of the charge.

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stronger Electric field.

Field lines that are closer together indicate a region with relatively

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weaker Electric field.

Field lines that are farther apart indicate a region with relatively

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DO NOT

Electric field lines _____ intersect.