What kind of device is shown in the picture above?
What kind of device is shown in the picture above?
An atom with the same number of protons and electrons is neutral (has no overall charge).
Atoms can become charged when they gain or lose ____.
An electromagnet is a _______ wrapped in electrical wire that is connected to a power source.
The interaction between electricity and magnetism is called _____.
What kind of device is shown in the picture above?
List three changes you could make to the above device that would increase the strength of the magnetic field around the nail.
What do we call a coil of wire that carries an electric current?
Hans Oersted discovered that when a current flows through a wire, a(n) _____ is created around the wire.
In the first image, the circuit is open. In the second image, Oersted closes the circuit. If Oersted were to reverse the direction of the current flowing through the wire, the red compass needle would move toward the _____.
Which of the following are advantages that electromagnets have over permanent magnets? Choose all that apply.
The process of using a magnetic field to create an electric current in a wire is called _____.
Which of the following would reverse the current in the wire? Choose all that apply.