Electric Fields

This lesson covers:

  1. How electric fields affect charged particles
  2. How to draw electric field lines
  3. How a strong electric field can ionise air

________ charged objects have an electric field.

Some

All

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Illustration showing electric field lines emanating from a positive charge and converging on a negative charge.

Electric fields can be shown with electric field lines.


Field lines always point from:

Negative to positive charge

Positive to negative charge

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True or false? Electric fields are strongest when close to the charged particle, and get weaker further away from the charged particle.

True

False

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Particles with like charges , while particles with opposite charges .

repel
attract

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Diagram showing two charged particles and their electric field lines

The above diagram shows two charged particles and their field lines.


The two charged particles are:

Attracted to each other

Repelled by each other

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Which of the following is true?

The electric field is stronger the closer you are to the charged particle

The electric field is weaker the closer you are to the charged particle

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Diagram showing two charged particles and their field lines.

The above diagram shows two charged particles and their field lines.


The two charged particles are:

Repelled by each other

Attracted to each other

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A strongly charged object can ionise the air, which means the air:

(Select all that apply)

Emits light

Loses some of its electrons

Act as an electrical insulator

Conducts electricity

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Diagram showing two negative charges for drawing electric field lines.

On a piece of paper, copy the two negative charges above and draw their field lines.


(Press 'Continue' when you're ready to check your answer)

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