Electric Force
If an object gains electrons, it is
negatively charge
attracts iron and materials that contain iron.
Magnet
the relationship between magnetism and electricity
A galvanometer does what
measures small currents
Charges flow through a circuit due to differences in
potential energy
The force between charged particles
Electric Force
The ends of magnets
Poles
A coil of wire is called
solenoid
a device that uses an electric current to turn an axle.
Electric motor
why do electrons repel each other....
They have the like charges
An electric charge has invisible
electric field
magnetic force that surrounds a magnet
Magnetic field
What is the difference between a solenoid and an electromagnet?
electromagnet has ferromagnetic core with the coils
What is the only part of a motor through which a current does not flow?
The magnets
current flows more easily through this....
Conductor
Continuous flow of charge
Electric Current
the field lines are close together
the strength is strong
Produce means
To create
Electromagnetic induction
process of generating an electric current from the motion of a conductor through a magnetic field
what can increase the electromagnetic force....
increase the number of loops, using a bigger battery
Current flows from______ potential energy to ______potential energy.
Higher, Lower
Like poles
Repel
If the field lines are far apart....
The magnet is weak
What happens to a conductor when it passes through a magnetic field?
current is induced in the conductor
Opposites.....
Attract