Electric Forces
The force between charged particles
What is electric force?
This object has two poles
What is a magnet?
The relationship between electricity & magnetism
What is electromagnetism?
These three metals are all attracted to magnets.
What is iron, nickel, and cobalt?
A region around charged particles where electric force is exerted on other charged particles or objects. Is invisible!
What is electric field?
A compass will always point in this direction if there is no magnetic field around it
What is North?
The three items we used to create an electromagnet.
What is a battery, copper wire, and an iron nail?
Name one use for electromagnets.
What is hard drives, speakers, motors, generators, MRI machine, scrap yard magnets?
Atoms with a positive charge will be attracted to atoms with this kind of charge.
What is negative?
A force that occurs when the attractive and repulsive forces between two poles interact
What is magnetic force?
Two ways to increase the strength of an electromagnet
What is increase the number of coils or increase the strength of the battery (increase the current or voltage)?
The name for iron, nickel and colbalt because they are all attracted to magnets.
What is ferromagnetic?
Electric charges that do not move through a current are known as this.
What is static electricity?
This happens to the magnetic field the farther we get from the magnet.
What is it gets weaker?
Adding coils to an electromagnet will have this effect.
What is make the electromagnet stronger (increase the magnetic field)?
Name one advantage of an electromagnet over a permanent magnet.
What is it can be turned off and on or it is relatively easy to increase the strength?
An electric field that is positive will move outward or inward from the charge.
What is outward?
This powder can help detect a magnetic field
What is iron filings
This is the energy transformation in an electromagnet.
What is chemical energy to electrical energy to electromagnetic energy (waves)?
This device measure electric current.
What is an ammeter