Electricity 1
Materials that allow electricity to move through it easily
Conductor
Materials that do not allow electricity to move through them easily
Insulator
What is the purpose of a switch
To open and close the circuit.
Potential difference is measured in ______________.
a) amperes
b) volts
c) coulombs
d) watts
Volts (v)
What is the schematic symbol for a battery?
Long line/short line
Plastic, glass, and rubber are good examples of
Insulators
Current is produced when charges move from a position of ________ potential energy to ________ potential energy.
What are high and low?
A circuit that allows only one route for electric current to travel.
Series
Copper, silver, and even salt water are examples of
conductors
Circuit that has two or more branches for electrons to follow.
Parallel Circuit
What is the SI unit for electric charge?
Coulombs (C)
What is the difference between an open circuit and a closed circuit
Closed - electrons can flow and circuit is working
Open - electrons cannot flow and circuit is not working
In this type of circuit, if one lightbulb goes out, the others will not be affected.
Parallel Circuit
What is the SI unit for resistance?
Ohm
What is the symbol for electric current?
I
Repel
What formula demonstrates the relationship between power, current, and voltage?
P=IV
What are the three ways that you can charge an object?
1. Induction
2. Contact
3. Polarization
What describes the relationship between the distance, charge, and electric force of two objects that are near each other?
Coulomb's Law
What shows the parts of a circuit and how the parts connect to each other?
Schematic Diagram
The alignment of charges at the surface of an object producing an induced charge.
Polarization
__________ is the opposition posed by a material to the flow of current.
What is resistance?
Electrical field strength depends on the ___________ and ___________ of each charged object.
What are charge and distance?
What is the rate at which an electrical device converts energy from one form to another?
What is electrical power.
What is the formula for Ohm's Law?
V=IR