Electricity and magnetism Flashcards
What is the function of the ammeter?
It is used as a measuring device to measure the current in the circuit
What is it called when there is more than one bulb in a circuit with only 1 loop?
Series circuit
What is it called when there is more than one bulb in a circuit with more than one loop?
Parallel circuit
What is the equation to find out resistance
Potential difference(v) Current (amps)
What is the equation to find out current
Potential difference
Resistance
What is the equation to find out potential difference
Current x resistance
When there is 2 positive charges they…
Repel
When there is 2 negative charges they…
Repel
When there is a positive and negative charge they…
Attract
What charge do protons have?
Positive charge
What charge do electrons have?
Negative charge
What charge do neutrons have?
None
What is charge?
A property of a particle
What are the two sides of the magnet called?
North and South
What is current?
The amount of charge flowing per second
What is current measured in?
Amps
Where do the charges come from?
The cell or the battery
What does potential difference tell you?
It tells you about the size of the force on the charges
What piece of equipment do you use to measure potential difference?
Voltmeter
What is potential difference measured in?
Volts (V)
How do you use the voltmeter?
By connecting it across the cell in which you want to measure the potential difference of
What does resistance tell you?
How easy or difficult it is to pass through the component
What is resistance measured in?
Ohms
