The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

(click on picture)
Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

Increasing the test charge increases the force.

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Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

Moving the test charge changes the magnitude and direction of the force.

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Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

Put test charges in different places.

(click on picture)back
Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

Put test charges in different places.

(click on picture)back
Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

Put test charges in different places.

(click on picture)back
Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge.

A negative charge feels an opposite force. The force per unit charge stays the same.

(click on picture)back
Examples --- What this is an example of

The test charge feels a force (red arrow).

The electric field (black arrow) is the force divided by the test charge. It depends only on position.

Electric field vectors are everywhere.

(click on picture)back
Examples --- What this is an example of