Show:
Positive and Negative Charge
Conductors and Insulators
Current and Voltage Difference
Batteries and Resistance
Series and Parallel Circuits
100
Protons and Neutrons
What is located in the center of a atom?
100
A material in which electrons are able to move easily.
What is a conductor?
100
The net movement of electric charges in a single direction.
What is an electric current?
100
Current.
What flows as long as there is a closed path that connect one battery terminal to another battery terminal?
100
Circuit in which electric current has only one path to follow.
What is a series circuit?
200
Positive Charge
What type of charge does a proton have?
200
True.
The electrical conductors are metals. ( true or false)
200
True
In a metal wire, or any material, electrons are in constant motion in all directions. ( true or false)
200
Because electrolyte is a moist paste, and not a liquid solution.
How does the dry cell gets its name?
200
No current
When any part of a series circuit is disconnected, ____ flows through the circuit.
300
A negative charge
What type of charge does a electron carry?
300
Wood, rubber, glass and plastic.
Name four good insulators.
300
A ball bouncing down a flight of stairs.
Give an example of the movement of an electron in an electric current.
300
6
How many wet cells does a lead-acid battery contains?
300
True
Parallel circuit have several advantages. ( true or false)
400
The accumulation of excess electric charge on an object
What is static electricity?
400
Insulator
What is a material in which electrons are not able to move easily?
400
Volts.
What is voltage difference measured in?
400
Dry-cell battery.
What type of cell does a flashlight use?
400
P=electric power, I=current, V=voltage difference P=IV
What is the equation for electric power?
500
Charge can be transferred from object to object, but it cannot be created or destroyed.
What doe the law of conservation of charge states?
500
Charging by contact
The process of transferring charge by touching or rubbing is called____
500
Voltage difference.
The force that causes a current to flow is related to a ____
500
Electrons, Light
Resistance is the tendency for a material to oppose the flow of ___, changing electrical energy thermal energy and __.
500
P=IV P=(10)(120)=1,200 watts or 1.2 kilowatts
A toaster oven is plugged into an outlet where the voltage difference is 120 V. How much power does the toaster oven use if the current in the oven is 10 A?