Electricity 2 Crossword

What is the simplest requirement for an electromagnet?
Where does a magnetic field occur in relation to an electrified wire? Around the ____ length of the wire
A ___ generates a stronger magnetic field.
Electromagnets differ because they can be ____ on or off.
Electromagnets ____ can be reversed.
______ strength can be changed.
Changing the polarity of an electromagnet involves ____ the current.
______ is the force by which objects are attracted to other objects or repelled by other objects.
Magnets have two opposite ends, called ___.
___ is often used to make one type of magnet, called an electromagnet.
Electromagnets are made from ______.
Electromagnets are made from copper wire coiled around a ____.
A___ is a “barrier” of magnetic energy found in proximity to a magnet.
The north pole of a magnet is attracted to the ____.
The north pole of a magnet is repelled by the ___ of another magnet.
Scientists believe the ____ is one giant magnet.
Direct ___ always flows in the same direction; the direction of an alternating current switches back and forth.
Function of a generator to turn _____ into electrical energy.
______ create current by using an electromagnet.
Where would you find direct current being used? A toy with a ___.
______ current is being used by a lamp plugged into the wall.
Hans Christian _____ discovered, in 1819, accidentally that electricity and magnetism were connected.
Proved that parallel wires carrying electrical currents in the same direction in a circuit would attract each other like unlike poles on the ends of bar magnets.
_____ discovered in 1825 that you could increase the power of an electromagnet by placing a bar of soft iron inside a coil of wire.
_____ coined the phrase magnetic field and created an electrical current using magnets.
Where does the electrical energy produced by a battery come from? ____ stored within the battery.
The ____ of the electricity (i.e., battery) is a part of a circuit.
to carry the electricity (i.e., wires) is a part of a circuit.
What are the three parts of the circuit? Source, a ___ or electronic device (i.e., lamp), and conductors to carry the electricity (i.e., wires).
____ is the electromotive force, measured in volts, that pushes the electric current through the circuit.
_____ is the number of electrons that pass a given point in a circuit at a given time.
___Law states that the electromotive force in a circuit (measured in volts) equals the current (measured in amps) multiplied by the resistance.