What is Magnetism?
The attraction or repulsion of magnetic materials.
What is magnetism?
What is electromagnetism?
These map out the magnetic field around a magnet.
What are magnetic field lines?
A device that measures small currents.
What is a galvanometer?
A battery produces this current.
What is a direct current?
This is what causes a magnet is attracted to a soup can.
What is Iron?
A coil of wire with a current.
What is a solenoid?
Magnetic field lines always start at one pole and end at another. What pole do they start at?
What is North?
Producing an electric current by moving a conductor through a magnetic field
What is a electromagnetic induction?
A constantly reversing current.
What is an alternating current?
When two magnetic poles that are alike are brought together, what happens?
What is repel?
A solenoid with a ferromagnetic core.
What is a electromagnet?
Iron filings are used with magnets to detect these.
When a wire with a current is placed in a magnetic field, electrical energy is transferred into what kind of energy?
What is mechanical energy?
Uses motioning a magnetic field to produce a current.
What is a generator?
What are the poles?
In order to change the direction of a magnetic field, you must do what to the current?
What is reverse it?
This device has a magnet on a needle that spins freely and is used for navigation.
What is a compass?
This turns the pointer on a galvanometer.
What is a current?
A device that increases or decreases voltage.
What is a transformer?
Name the two poles that attract one another.
What are North and South?
What is electrical energy?
Magnetic field lines are closest together here.
What are the poles?
The ability to move an object over a distance.
What is energy?
A step up transformer increases this.
What is voltage?