Circuits and Calculations
Currents and Batteries
Vocab
Charges
100
What is a circuit?
A closed path that an electric current flows through.
100
What is an Electric Current?
The net movement of electric charges in a single direction.
100
What is a material in which electrons are able to move easily?
Conductor
100
What are the 2 attractions of charges?
+ to - and - to +
200
What is a Series Circuit?
A circuit where the current only has one loop to flow through.
200
What is an example of a dry-cell battery?
Alkaline Batteries and Zinc-Carbon Batteries.
200
What is the buildup of charges on an object called?
Static Electricity
200
What does the Law of Conservation of Charge say?
Charge can be transferred from object to object, but cannot be created or destroyed?
300
How do you calculate Electrical Energy?
Electrical Energy=Electrical Power X Time or E=Pt
300
What are Wet-Cell Batteries commonly found in?
Electric Utilities, Aviation, Cell Phone towers, Cars, Energy Storage.
300
What is a material that poorly conducts electricity called?
Insulator
300
What is Repulsion?
2 particles of the same charge separating.
400
How do you calculate Electrical Power?
Electrical Power= Current X Voltage Difference or P=IV
400
What is Voltage Difference measured in?
Volts
400
What is the tendency of a material to oppose the flow of electrons?
Resistance
400
What is charging by contact?
Transferring charge by touching or rubbing.
500
What does Ohm's Law say?
The current in a circuit equals the voltage difference divided by the resistance.
500
What kind of battery was the original type of rechargeable battery?
Wet-Cell Battery
500
What is the rearrangement of electrons on a neutral object caused by a nearby charged object?
Charging By Induction
500
What causes lightning?
Stray electrons in clouds and when the charge overpowers then mixes with another charge.
M
e
n
u