Electric Force
This is the area around a charge in which the electric force is experienced by other charged objects.
Electric Field
The push or pull that occurs when a magnet interacts with another object is known as the
magnetic force
What do you call the relationship between electricity and magnetism?
electromagnetism
The following is a description of what?
Moving a conductor through a magnetic field generates a current through a conducter
Electromagnetic induction
Charges flow through a circuit due to differences in
How is a magnet able to pick up bits of metal without actually touching them?
There is an invisible magnetic field
A ___________ is a coil of wire with a current running through it. If you wrap the coil around a ferromagnetic material, it becomes an _____________.
solenoid
electromagnet
A step-down transformer has a voltage of 400 V through the primary coil and 200 V through the secondary coil. There are 5 loops in the secondary coil. How many loops are in the primary coil?
10 loops
Why would two electrons repel each other if they were close together?
Because the charges are alike, so they experience a repulsive force
When placing a magnet on a refrigerator, what happens to the potential energy?
Potential energy decreases because they are already attracted to each other
How do you determine the direction of a magnetic field based on the direction of current?
The Right-hand rule
Increasing number of magnets within an electric motor will _________ the speed of the motor.
increase
conductors
Where are the magnetic forces the strongest?
On either end, by the N or S
In this image, if the current is moving up, what is the direction of the magnet field?
using right hand rule, the current would be going counterclockwise
How are electric motors and generators different in terms of electromagnetism and the transformations of energy?
Electric motor: current produces magnetic field, electric energy transformed to mechanical energy
Generator: changing magnetic field produces a current, mechanical energy transformed into electric energy
Suppose a blanket has a sock stuck to it due to static electricity. When you pull the sock off, what happens to the potential energy between them?
Potential energy increases
How can you identify the magnetic north pole of an unlabeled magnet by using a labeled magnet?
the unlabeled north would be attracted to the labeled south pole and it would be repelled by the labeled north pole.
What did Orsted discover about electricity and magentism?
They are related! A flow of charge (current) produces a magnetic field.
The water provides energy to turn the armatures in the generators.