Physics-electeicity+magnetism Flashcards
What happens when a electric current flows
Tiny particles move in the wire these particles Carry energy that is used up by the components
True or false
An electric current s the movement of positively charged particles called neutrons
False
An electric current is the movement of NEGATIVELY charged particles called ELECTRONS
True or false
The current tells us how fast the particles are moving
True
How do we measure currents
We measure a current in amps so we use an ammeter
Describe the correlation between voltage and energy
The higher the voltage the more energy
What is resistance measured in
Ohms
How does the resistance in a wire increase
The length of the wire increase the resistance
If the wire is thinner the resistance increases
In a series circuit if we add more components will the current go down
Yes
True or false
In a parallel circuit the components are in different branches
True
In a parable circuit what happens if you add more branches
The current coming out of the battery will increase
Will current rake the path of more resistance or less resistance if there is two wires
The current will take the path of less resistance
What materials will a magnet attract
Steel, iron, nickel and cobalt
Will an electric current flow if there is no power source
No
Will a wire with a current going through act like a magnet
Yes
Is the magnetic field going round a straight wire circular
Yes
