# phsycis

 what is electricity is the movement of electrons through something( medium) What are the 2 reasons why electrons move 1. they are attracted to protons2. they are hit by another electron and bounce out of the way What is electricity similar to water moving in a hose What is a circuit a complete pathway for electrons to travel What happens in a complete circuit electrons must be able to move back to their starting point What 3 main parts do circuits have 1. source of power/electrons ex:battery2. medium for electrons to travel ex: wire and other conductors3. something for electrons to do work on ex: light bulb Define resistor designed to slow down the flow of electrons What material is resistor made of made of material that isn't quite considered to be a conductor, but isn't an insulator either Different materials allow circuits to have ______ resistances different What does a switch allow you to do allows you to disconnect the circuit when you want electrons to stop flowing and reconnect when you want electrons to resume flowing define closed circuit circuit is complete and electricity can travel thru it define open circuit circuit is incomplete and electricity cannot travel thru it. Usually, this occurs when you move a switch to the off position define series circuit all the objects that work is done are in a straight path How you you travel in a series circuit you can travel from one object to the next only one way. Are no options Define parallel circuits objects that work is done on are not in a straight path How do you travel in a parallel circuit you have options to how you can travel from one object to the next what is an electrical current electrons in motion what are the 2 main types of currents Alternating and direct Alternating electrons constantly ________ like in an ____ change directions, outlet Direct electrons move _________ like in a ______ only in one direction, like in a battery How is current measured is measured in terms of the rate at which electrons travel through a circuit What unit is current symbolized in? Amperes or Amps (A) What is the tool used to measure current ammeter What is voltage? is the measure of the amount of force (pressure) that keeps the electrons flowing across circuit Define medium? where electrons go through Define AC and an example electrons constantly change directions. Ex: outlet Define DC and an example electrons move only in one direction. EX: battery What is the two reasons why electrons move. 1. Are attracted to protons.2. They are hit by another electron and bounce out of the way. Define power is a quantity that measures the rate at which work is done define current rate at which electrons travel through a circuit define resistance how much the flow (current) is restricted by the material (resistor) What causes resistance friction What two relationships are described in Ohm's Law? What's the equation. Current is directly related to volts and inversely related to resistance. If the distance between two objects is cut in half and the charges remain the same, how much will electrical force between them change? 4x If the charges of only one object doubles, how much will the force between them change? 2x When a circuit is complete, it is called a closed circuit A unit to tell you the amount of charge in an object coloumb Rate at which electrical work is done electrical power When does circuits become overloaded when the resistance is too low Complete pathway for electrons to travel. circuit Caused by pressure differences across a resistor voltage Amount the current decreases when electrons pass through a resistor resistance The force between two objects is ____ related to the square of the distance between the objects inversely In the coloumbs law , what does q1 and q2 represent represent the charges of the two objects Caused by improper, wiring, occurs when electrons have accidental alternate path of travel causing an overloaded circuit? short circuit Tells is the relationship among force between two objects, charges of the objects, and distance between the objects. coloumbs law You shock others because you have an excess of these particles in your body. electrons Authorjennx14 ID219720 Card Setphsycis Descriptionpbyscs Updated2013-05-17T03:01:17Z Show Answers