Static & Current Electricity
The negative part of the atom moves to create electric charge.
3 Required components for a circuit to function.
What are an energy source, load and conductors/wires?
The formula for Current
I = Volts/Resistance
List one SPECIFIC way that electricity has improved the lives of Saskatchewan residents.
Vary: Cooking, lighting, schools, homes, farming, productivity
The 2 main parts of an electrochemical cell.
Electrodes
Electrolyte
List the 3 laws of electric charge.
What is..
opposite charges attract
like/same charges repel
charged object will attract neutral objects
The name for a circuit when the light bulb is ON
what is a closed circuit?
The unit for current
What is Amperes (amps)?
The most used RENEWABLE resource in Saskatchewan
What is Hydroelectric (water) at 21%
What does the Energy star symbol mean?
That the appliance is the most EFFICIENT appliance in it's class.
This scientist invented the 1st battery.
Who is Alessandro Volta?
This type of circuit has more than one path for electricity to flow.
What is a parallel circuit?
The length of wire that causes most resistance
Long wired have more resistance. More energy for electrons to travel longer distance.
The most used NON-RENEWABLE resource in Saskatchewan.
What is Natural Gas - 39%
List 2 positive reasons for using energy efficient appliances in your home.
Less energy waster
Less money waster
Appliance works better
Reduced environmental impact
Wood, Rubber & Glass are examples of this type of material.
What is an insulator?
Another bulb is added to a series circuit that already has 2 bulbs. What happens to the other 2 bulbs. why?
Bulbs will dim. Current is shared among all bulbs in the circuit. Adding 1 more means all will get less current/bulb.
What happens to the current when voltage is increased?
Current would increase
Provide 2 different Reasons Saskatchewan uses a "Power Mix".
One source alone can not meet the demands
Some like solar or wind depend on weather.
Some like coal and natural gas we are running out of and polluting the environment.
We need a mix to meet the demand of the residents while watching costs and not doing too much damage.
List 3 specific difference ways you (a student) could reduce your electrical consumption.
Vary
The 2 requirements in order for current electricity to flow.
What is an energy source & complete pathway.
There is a circuit with 3 bulbs in parallel. One bulb in the circuit receives 8V. How many Volts do the other bulbs get?
8 volts.
What happens to the electrons when resistance is increased?
They will move slower.
SaskPower's 2 goals for the future.
What are..
1. Reduce emissions by 40% lower than 2005's levels
2. Use 50% renewable electrical energy by 2030.
Which type of cell (primary or secondary) would be best for Ms. Langlois's laptop. Give a specific reason why you picked this one.
Secondary would be best. Secondary can be used up and recharged many times. A laptop is a high use device - has many functions. If primary cells were used, we would use many, waste a lot and it would cost a lot of money.