Chapter+33

​**Key Definitions****: **
 * 1) **__Capacitor__**-A device used to store charge in a circuit.
 * 2) **__Electric Potential__**-Potential energy per coulomb (J/C) Measured in volts.
 * 3) **__Electric potential energy__**-Energy a charge has due to its locationin an electric field.
 * 4) **__Electric Field__**-The distribution in space of the strength and direction of forces that would be exerted on an electric charge at any point in that space.
 * 5) **__Electric Shielding__**-The imposition of a metal or composite barrier between one or more sources of electrical noise and their victims with the objective of reducing or eliminating electrical interference.
 * 6) **__Volt__**-SI unit of electric potential.

**Notes:**
 * The force field that surrounds a mass is a gravitational field.
 * An electric field can be represented by vectors or electric field lines.
 * A charged object can have potential energy by virtue of its location in an electric field.


 * Electric potential equals electric potential energy divided by charge.
 * In an electric field, where the force on th test charge is weak, the field is small.
 * A charged object can have potential energy by virtue of its location in an electric field.
 * An electric field is a storehouse of energy.
 * Electrical energy can be stored in a common device called a capacitor.
 * The direction of the field at any point is the direction of the electrical force on a positive test charge.
 * A capacitor is a device for storing charge and energy.

**Pictures:**.

. this graph shows electric feild lines Capacitor



Links: Locate and embed at least 2 links related to the chapter. Electric Fields (Help explain what an electric feild is)

[|physics classroom](An overall outline of the chapter)

> > > **Record the aswers to the above questions at the link below** > Answers to Test Questions
 * Test Questions: **
 * 1) A capacitor is...? A. a device for storing charge B. sheilding for gravity C. shielding for an electric feilds
 * 2) You are safe in a car from lightning T/F
 * 3) Gravity can be shielded T/F
 * 4) Slectric fields can be shielded T/F
 * 5) An electric feild can be represented by electric feild lines T/F
 * 6) What is the SI unit for eletric potenial? A.grams B.volts C.amps
 * 7) Potentental and Kenetic energy are the same thing T/F
 * 8) Does a gravity feild and an electric feild have a force feild T/F