Eletricity and Magnetism Flashcards
What do positive charges so to positive charges
They repel each other
What do positives and negatives do
Actract
What do negatives and negatives do
Repel
What are two charges
Positive charge and negative charge
What is a proton
A part of an atom which has a positive charge
What is a electron
A part of an atom which has a negative charge
What is a nuetron
A part of an atom which has no charge
What is a current
The amount of charge flowing per second
What can you use to mesure current
An ammeter
What is the symbol for amps
A
What do you use to mesure potential difference
A voltmetre
What is the unit of potential difference
Volts
What does potential difference do
It provides the push to make charges move
How many loops are there in a series circuit
1
How many loops are there in a parallel circuit
Multiple
What happens if a bulb breaks in a parallel circuit
The other lights stay on
What happens to the total current if you add more branches to a parallel circuit
The total goes up
What is resistance measured in
Ohms
What is resistance
How easy or hard it is for a cahrge to pass through
What do north poles do to other north poles
They repel
What do south poles do to south poles
Repel
What do south poles do to north poles
Attract
State two ways you can find the magnetic field of an object
Using plotting compasses
Using iron filings
What is the magnetic field if the filings are closer together
Stronger
