Unit 10 A
What is an ion?
It is a charged atom or group of atoms.
True or False. Do opposites attract?
True
Describe a wet cell and dry cell.
A dry cell contains an electrolyte past, and a wet cell contains an electrolyte liquid.
Explain a watt.
A unit of electrical power.
They are safety devices that are placed in series with other circuits which lead to the appliances and wall outlets in your home.
Name one of the weakest objects that has the weakest hold on electrons.
Glass, human hair, nylon
Describe a lightening rod. And what does it do?
You put it on a high building and lightening will usually strike the highest object in the area.The lightening rod protects the house or building. As appose to hitting something small like a house.
Explain the GRASP method.
Given, Required, Analysis, Solution Solve
What does AC and DC stand for?
AC is alternating current, DC stands for direct current.
What is efficiency?
Efficiency is the ratio of useful energy output to total energy input. Usually expressed as a percentage.
Why do most homes in the city not need a lightening rod?
Because they are surrounded by taller buildings
Describe what electrical field is.
The space in between two charged objects
What is potential difference?
Potential difference is aka voltage, its when energy is lost or gain.
What is a phantom load?
The electricity that is consumed by an appliance when it is turned off is called the phantom load.
Describe time of use pricing.
It’s the on-peak and off-peak hours.
If a neutral object has no net charge why it attracted to a charged object that is placed nearby?
The neutral object rearranges its self, so that its negative electrons and the charged object positively charged electrons attract.
Describe grounding.
Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object.
Draw a series circuit including battery, switch, fuse, lamp and a voltmeter, showing which way the electrons flow.
This one will be a race between the two teams to draw the fastest
What is electrical power?
It’s the rate at which an appliance uses electrical energy.
Tell us what the 3 holes are for on an outlet.
Left one is neutral, right one is live, and the bottom is the ground.
What is static electricity?
Static caused by friction.
Describe what electrostatic spray painting is.
So you charge the object you are spraying and also charge the spray with the opposite charge, because opposites attack.
Explain the difference between a primary cell and secondary cell.
A primary cell is only able to be used once, a secondary cell is rechargeable.
Describe Solar Energy.
The sun beats down on the voltaic panels which then transforms the solar energy into electricity for your home.
Explain the process electricity goes through to get to your home.
Goes from the power generating station to a transformer to substation to a distribution station then to telephone poles they to your home.