Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

8 Cards in this Set

  • Front
  • Back
What is the difference between AC and DC and and what do we use today?
AC flows in one direction and switches to the opposite, while DC only flows in one direction. We use AC.
How many particles are in an atom and what are they called?
3 -protons, neutrons, and electrons
What are the 2 types of magnets and what other names are used for the magnets?
Natural and synthetic, and loadstone or magnetite are other names for a natural magnet.
How are synthetic magnets made?
By rubbing a natural magnet over metal or driving electrons through coiled wire.
Describe the 2 types of poles and do all magnetic fields house them?
north and south poles, attract each other, while 2 of the same deter one another. no
what are electromagnets?
wires coiled to increase the power of magnetic fields.
what are the 2 types of electricity and what's the difference?
static and current, static tries to stabilize itself by bouncing around, it's the imbalance of + and - particles. current is created by the passage of charged particles departing from one atom to another.
describe a typical house outlet, aka three-wire single phase
classified as single phase power, one sine wave of AC travels oscillating from -170 to 170 volts the root mean square(rms)avgs. around 120. one the outlet, the smaller slot is designated hot, feeding 120v AC to the device. the longer one is neutral, providing electrical passfrom the plug to the source. the single hole is known as the ground. it helps with electrical safety.