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M&B Chapter 7 SG

Chapter 7 Study Guide

QuestionAnswer
What is a circuit that has only one path? Series
What is a circuit that has more than one path? Parallel
What does the symbol V stand for? Volts
The flow of current through wire is on what current? Electric
What allows electrons to move easily? Conductors
What is the unit of electrical energy? Kilowatt Hour
Electrical what is expressed in watts? Power
A closed path through which electrons can flow is known as what? A Circuit
A flashlight battery is an example of what? A Dry Cell
What is the device that detects electric charges? Electroscope
What is Ohm's Law? Current is equal to the voltage difference of a circuit divided by its resistance.
A car battery is an example of what? A Wet Cell
A metal rod that directs lightning to earth is known as what? A lightning rod
The accumulation of electric charges on an object is known as what? static electricity
Transferring charge by touching is charging by what? Contact
One thousand watts of power used in 60 minutes is what? 16.7 amperes
Electric energy is equal to what times time? Power
The tendency of a material to oppose the flow of electrons is known as what? Reistance
Units used to measure the rate of electron flow is known as? amperes
What is the flow of electrons through a conductor? Electric current
What is the rate at which electrical energy is changed to another energy form? Electric Power
What does not allow electricty to flow easily? Insulator
What surrounds electric charges and exerts force on other charges? Electric field
What is measured in volts? Voltage difference
Electrical power is equal to what times time? Current
A dry cell is used in a flaslight to convert what to light? Electrical energy
Thin wires have what kind of resistance to electron flow than thicker wires do? Lesser
A fuse will melt if the what in a circuit becomes too high? Current
Current has only one loop to flow through in a what? Series circuit
Current is almost always the flow of what? Electrons
Created by: Maggie&Bethany
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