Chapter 7 Energy Section 1

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higher

Electrons flow from areas of ________ voltage to...

created or destroyed

based on the law of conservation of charge, charges cannot be....

kilowatt

1,000 watts

watt

A measure of power equal to one joule of work per second.

more

A negatively charged object has ________ electrons

fuse

Electrical device that can interrupt the flow of electrical current when it is overloaded

electrons

Negatively charged particles

protons

Positively charged particles

120 volts

U.S House voltage

positively

When an atom loses electrons it becomes _____________ charged

wet cell battery

a car battery is the type of

distance

a factor that the force between charges depends on

lightning

a massive static discharge between a storm cloud and the ground

conductor

a material in which electrons can move easily

insulator

a material in which electrons cannot move easily

circuit breaker

a switch that opens a circuit automatically when the current exceeds a certain value

static electricity

an accumulation of excess charge on an object is called

amperes

current is measured in ...

electrons

current is the flow of

neutral

objects with equal amounts of positive and negative charge are electrically...

charging by induction

rearrangement of electrons on neutral object by a nearby charged object

ohms

resistance is measured in

electric force

something charged objects exert on each other

electric field

something that surrounds every electric charge

neutrons

the particles of the nucleus that have no charge

grounding

using Earth as a conductor to avoid lightning damage

volts

voltage is measured in

negatively

when an atom gains an electron it becomes _________ charged


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