section 2
section 3
vocabulary
100
what is an electric motor?
a device that changes electrical energy into mechanical energy.
100
who discovered that electric current could make magnetic field?
hans christan oersted
100
the interaction between electricity and magnetism.
What is electromagnetism
200
what is a galvanometer and where is it found?
it measures current, and they are often found in equipment that is used by electricians.
200
who made electric current out of a magnetic field?
michal furadny
200
a coil of wire with an electric current in it.
What is solenoid
300
what is an example of the use of an electromagnetism in your everyday life?
a doorbell or/and a compass
300
What is made when a magnet moves in a coil of wire or when a wire moves between the pole of a magnet?
an electric current
300
a device that increases of decreases the voltage of alternating current
What is transformer
400
the strength of the magnetic field of a solenoid decreases as more loops per meter are used, true or false?
false, it increases
400
an electric current is induced only when...
a wire crosses the magnetic field
400
a device that converts mechanical energy into electrical energy
What is electric generator
500
fill in the blank _____________ attract things only when there is electric current in it.
electromagnets
500
What is very important for the generations of electrical energy?
electromagnetic induction
500
a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil.
What is electromagnet
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