New
New
Year 8

Static electricity

I can describe how objects with a positive or negative charge attract or repel other charged objects.

New
New
Year 8

Static electricity

I can describe how objects with a positive or negative charge attract or repel other charged objects.

Lesson details

Key learning points

  1. Some objects can be charged by rubbing with certain materials.
  2. Objects with a static electric charge can exert a force on other objects (that contain electric charge).
  3. The electrostatic force acts at a distance.
  4. Objects with opposite electric charges attract each other.
  5. Objects with the same electric charge as each other repel each other.

Common misconception

Pupils often think ‘negative’ refers to a neutral material, that there is only one type of charge and that friction creates charge.

The understanding of the particle model of matter needs to be secure before introducing atomic structure. Using dynamic models to help pupils visualise what is happening to the negative charge helps them progress in their thinking.

Keywords

  • Static electricity - is caused by the build-up of charge on insulators.

  • Positive charge - is attracted to a negative charge.

  • Negative charge - is attracted to a positive charge.

  • Electrostatic force - is a force acting between charges.

Link pupils' own experiences of static electricity to examples in the lab that illustrate its key properties. Introduce pupils to the concept of positive and negative charges and encourage them to describe their properties by investigation and comparing their explanations to a model .
Teacher tip

Content guidance

  • Risk assessment required - equipment

Supervision

Adult supervision required

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
Which of the following statements about an electrical cell is correct?
it only has a positive terminal
it only has a negative terminal
it has two positive terminals
Correct answer: it has a positive and a negative terminal
it has two negative terminals
Q2.
Which two of the following statements correctly describe what happens when a battery is connected to a circuit?
the positive terminal pulls in positive charges
Correct answer: the positive terminal pulls in negative charges
the negative terminal pushes out positive charges
Correct answer: the negative terminal pushes out negative charges
Q3.
Current is defined as the flow of ...
voltage.
protons.
matter.
Correct answer: charge.
Q4.
Which of the following is the charged particle that flows through the metal filament of a light bulb?
Correct answer: electrons
protons
neutrons
atoms
Q5.
All three of the bulbs in the circuit shown are identical. Which of the following is the voltage across two of the bulbs?
An image in a quiz
6 V
Correct answer: 4 V
3 V
2 V
Q6.
In the circuit shown, the bulbs are identical and the voltage across the resistor is 3 V. Which of the following is the voltage across two of the bulbs?
An image in a quiz
6 V
4 V
3 V
Correct answer: 2 V
1 V

6 Questions

Q1.
Which of the following things need to be done to electrostatically charge a plastic ruler?
connect it to a 9 V battery with a wire
connect it to 230 V mains electricity
rub it with aluminium foil
Correct answer: rub it with a cloth
Q2.
Which two of the following are the types of electrostatic charge?
neutral
Correct answer: positive
Correct answer: negative
north
south
Q3.
A charged ruler is able to pick up the uncharged pieces of paper as shown. Which of the following statements is correct?
An image in a quiz
Correct answer: there is an electrostatic force of attraction between the ruler and paper
there is an magnetic force of attraction between the ruler and paper
there is an gravitational force of attraction between the ruler and paper
Q4.
Which of the following statements can correctly describe the ruler shown? Select all that apply.
An image in a quiz
Correct answer: the ruler is electrostatically charged
the ruler has a positive and negative terminal
Correct answer: the ruler has a positive charge
the ruler is magnetic
Q5.
Which of the following will the two balloons shown experience due to their electrical charges?
An image in a quiz
an upward force
a downward force
Correct answer: a force of attraction
a force of repulsion
Q6.
The ends of the plastic strip shown are pushing away from each other. Which of the following statements can explain why? Select all that apply.
An image in a quiz
Correct answer: the plastic strip is charged
Correct answer: the charge on both ends of the strip is the same
Correct answer: the strip has been rubbed with cloth
the strip has been magnetised
Correct answer: like charges repel

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