P3 Electric Circuits Flashcards
What causes Static electricity.
The transfer of elections
Atoms contain ___________ protons and ___________ electrons
Atoms contain POSITIVE protons and NEGATIVE electrons
Neutral matter contains how many protons and electrons?
Equal number of each, this has a Zero net charge
How is static electricity built up in certain insulating materials?
As the materials are rubbed together electrons are scraped off from one to the other
What happens if enough charge builds up?
The charge will suddenly move causing sparks and shocks
Similar charges ___________ and opposite charges __________
Similar charges REPEL and opposite charges ATTRACT
What are the two charged forces known as?
Electrostatic Attraction
Electrostatic Repulsion
What type of force is static electricity?
A non-contact force - the objects don’t need to touch
What will happen if two positively charged rods hanging on string are placed near each other?
They will move away from each other, as like charges repel.
What is an electric field?
The space surrounding any electric charge where it’s effects can be felt
When a charge is placed in electric field of another charge where is the force exerted?
A, The first charge.
B, The second charge
C, Both
C, Both
The size and force between the two charges depends on what?
The strength of the electric fields
The strength of an electric field depends on what?
The size of the charge and the distance from the charge - the closer you get, the stronger the field gets.
If the forces are big enough between a positively charged object and a negatively charged object what will happen if they are placed close enough together?
The electrons will ‘jump’ from the negatively charged object to the positively charged object. This is a Spark.
Explain what is meant by an electric field?
An electric field is the space surrounding an electric charge where its effects can be felt
