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Calvert Chapter 7

Chapter 7 study guide

QuestionAnswer
1,000 Watts of power used in 1 hour is...? 1 Kilowatt-hour
Thin wires have a _____ resistance to electron flow than thicker wires do. greater
A flashlight is an example of a...? Dry Cell Battery
Ohm's law states that the current equals ______ divided vy the resistance Voltage difference
Electrical power = _____xVoltage difference Current
Electrical energy = _____xtime Voltage
Current is measured in...? Amperes
Current has only one loop to flow through in a_____. Series circuit
Tendency for a material to oppose the flow of electrons is called...? resistance
Car batteries are examples of...? Wet cell
A current that has 2+ branches is a...? parallel circuit
Current is almost always the flow of_____. electrons
A fuse will melt if the _____ Becomes too high. resistance
A closed path through which electrons can flow is...? A circuit
A power rating lists the ____ required to operate an appliance. voltage
What allows electrons to move through it easily? conductor
A closed path through which electrons flow. circuit
Accumulation of electric charges on an object. static electricity
A circuit with more than one path. parallel circuit
A tendency of a material to oppose electron flow. resistance
Does not allow electricity to move through it easily. insulator
Push that causes charges to move. voltage difference
Surrounds electric charge and exerts force on other charges. electric field
Rate at which electrical energy is changed to another energy form. electric power
Flow of electrons through a conductor. electric current
Circuit with only one path. series
Unit if electrical energy. kilowatt hour
Current is equal to the voltage difference of a circuit divided by its resistance. Ohm's law
Car battery. wet cell
Metal rod that divides lightning to the Earth. Lightning rod
Created by: KJWA
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