Electromagnetism 1
This character was green and small but yet, very powerful he was.
What is a Yoda?
These are the two ways to increase the strength of an electromagnet.
What is increasing the number of turns in the solenoid or increasing the amount of current?
When a wire is exposed to a changing magnetic field, this is produced.
What is an electrical current?
What is directly proportional to the current I and inversely proportional to the distance from a current carrying wire?
B
When a current flows through a wire, this is produced.
What is a magnetic field?
The force on a moving charge within a magnetic field is known by this name.
Lorentz force
This quantity measures how much magnetic field passes through an area
What is magnetic flux
In electromagnetic waves, the electric and magnetic fields are oriented this way relative to each other.
What is perpendicular (at right angles) to each other?
If the input coil has more coils than the output coil in an electrical transformer, then the resulting voltage will be this in relation to the input voltage.
What is less voltage?
A transformer that decreases the voltage is known as this.
What is a step down transformer?
What law quantifies the amount of EMF produced by a change in magnetic flux through a coil
Faraday's Law
This hand rule helps you find the direction of the force on a current-carrying conductor in a magnetic field
What is Fleming’s left-hand rule (motor rule)?
A device that uses electromagnetic induction to change the voltage of electric current is known as this.
What is an electric transformer?
The fingers of your hand in demonstrating the right hand rule for current carrying wire indicates this.
What is the direction of the magnetic field?
The law that explains the direction of the induced current in a coil exposed to a changing magnetic field
Lenz' Law
On a magnetic field diagram, closely spaced field lines indicate this about the field.
What is a stronger magnetic field?
This law says the electric force between two point charges varies as the product of the charges and inversely as the square of their separation.
What is Coulomb’s law?
A device that changes kinetic energy into electrical energy via electromagnetic induction is known as this.
What is a generator?
This is a coil of wire with an electric current flowing through it.
What is a solenoid?
Of all regions in the electromagnetic spectrum, this one has the highest frequency and energy.
Gamma Rays