Electricity and Magnetism - prep Flashcards
What two types of electric charge are there?
Positive and negative
Which particle carries negative charge?
Electrons
Which particle carries positive charge?
Protons
Which particle has no charge?
Neutrons
What happens when similar charges are near each other?
They repel
What happens when opposite charges are near each other?
The attract
How would a neutral object become charged?
By rubbing two materials together
Which particle always moves when objects are rubbed together?
Electrons
Which force is required to move electrons?
Friciton
What type of materials are needed for static charge to build up?
Insulating materials
How does lightning occur?
Electrons jump from the cloud to the ground creating a large current. This is seens as lightning.
What is an electric field?
An area where an electric force acts on a charged object
Define current
The amount of charge flowing per second
What does a closed switch do?
It completes the circuit and allows current to flow
What does an open switch do?
It opens the circuit and does not allow current to flow
