Electric Charge and Static Electricity
Electric Current I
Electric Current II
Batteries
Miscellaneous
100
How do charges that are opposite behave?
They attract each other.
100
What type of material does NOT transfer electric charge well?
Insulator
100
What causes a current in an electric circuit?
Voltage
100
Who built the first battery?
Alessandro Volta
100
What is the difference between series and parallel circuits?
Series circuits only have one path for current to travel. Parallel circuits have several paths for a current to travel.
200
How do like electric charges behave?.
They repel each other
200
What type of material does transfer electric charge well?
Conductor
200
What do you call the measure of how difficult it is for charges to flow through a material?
resistance
200
What is an electrochemical cell made of?
Electrodes in an electrolyte
200
What will happen if a circuit is open?
The device(s) on the circuit will not work. Current will be stopped.
300
Draw the electric field of a positive charge.
On board
300
How is electric current produced?
Charges flow continuously from one place to another.
300
Name the four factors that determine resistance.
Diameter, length, material, and temperature of the wire.
300
Describe the parts of Volta's electrochemical cell.
Silver and Zinc were electrodes salt water was his electrolyte.
300
Explain resistance in terms of length.
A short wire have less resistance than long wires.
400
Draw the electric field of a negative charge.
On board.
400
What is a complete, unbroken path through which charges flow?
Electric circuit
400
The lower the resistance the __________ current there is for a given voltage.
More
400
What is the difference between wet and dry electrochemical cells?
Wet cells have a liquid electrolyte Dry cells have a paste electrolyte
400
Explain resistance in terms of diameter.
large diameters have less resistance than small diameters
500
What is static electricity?
The buildup of charges on an object.
500
Define electric current.
The continuous flow of electric charges through a material.
500
What kind of material has MORE resistance?
Insulator
500
What is are the three features of a circuit?
Have devices that are run by electrical energy Have a source of electrical energy Connected by conducting wires.
500
Explain resistance in terms of temperature.
The cooler the material, the less the resistance. The warmer the material, the more the resistance.
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