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Morgann St. Gd. Ch.7

QuestionAnswer
The presence of a static electric charge can be detected by an? electroscope
What is lighting? Static Electrity
The rearrangement of electrons on a neutral object caused by a nearby charged object is called ... ? Charging by induction
What is a conductor? Material, such as copper wire, in which electrons can move easily.
What is an insulator? Material in which heat flows slowly.
The process of transferring charge by touching or rubbing is called ... ? Charging my contact
The net movement of electric charges in a single direction is a ... ? Electric current.
A _________ is realted to the force that causes electic charges to flow. Voltage difference
A closed path that electric curent follows is a ... ? Circut
What is Resistance? It's the tendency for a material to oppose the flow of electrons, changing electrical energy into theremal energy and light.
What does a wet-cell battery contain? It contains two connected plates made of different metals or metallic compounds in a conducting solution.
What is Ohm's law? The current in a circut quals the voltage difference divided by the resistance.
What is energy? The ability to cause change.
In a _______ , the current has only one loop to flow through. Series circuit
A parallel circuit contains what? It contains two or more branches for current to move through.
The rate at which electrical energy is converted to another form of energy is the ... ? Electric power
How do you calculate electic power? Electric opwer (in watts) = current (in amperes) X voltage difference (in volts)
The unit for power is ... ? Watts
How do you calcualte electric energy? Electrical energy (in kWh) = electric power (in kW) X time (in hours)
How can one faulty bulb cause the whole string to go out? Because the parts of a series circuit are wired one after another, the amount of current is the same through every part.
Created by: morgann16
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