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Grade 6 Magnets & E

Chapter 2 Electric Charges and Current

electric field the electric force that extends from every charged particle
static electricity the buildup of charges on an object
friction the transfer of electrons from one object to another by rubbing
conduction the transfer of electrons from a charged object to another by direct contact
induction the movement of electrons to one part of an object by the electric field of another object
static discharge the loss of static electricity as electric charges move off an object
electroscope an instrument that can detect the presence of electric charges, but cannot determine the type of charge
electrical potential the potential energy per unit of electric charge
potential difference the difference in electrical potential between two places
voltage the unit of measure of potential difference
voltage source creates a potential difference in an electric circuit; batteries and generators
electrical resistence the opposition to the flow of charges
voltmeter a device that measures potential difference or voltage
ammeter a device that measures current
Ohm's Law a conductor or any other device that has a constant resistance regardless of the voltage
series circuit all the parts of the circuit are connected one after another; only one path for electricity to follow
parallel circuit different parts of the circuit are on separate branches; more than one path for current to take
short circuit a connection that allows current to take an unintended path
third prong a round prong of a plug that connects the metal shell of an appliance to the ground wire of a building
grounded electrical systems lead charges from a circuit into the ground
lightning rod a metal rod mounted on a building in order to protect a building from lightning
fuse a device that contains a thin strip of metal that will melt if too much current flows through it
circuit breaker a safety device that uses an electromagnet to shut off the circuit when the current gets too high
conservation of charge electrons are transferred from one location to another; charges are not created or destroyed
Created by: Dcoleman