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Ch.10 Static Charges
Ch.11 Electric Circuits
Ch.12 Generating and Using Electricity
Double Points - Bonus Questions
Double Points - Bonus Questions
100
What is the proper term called when different materials rub together building an electric charge? /If an object has a positive charge, which direction is the electric field going: outwards or inwards?
Charging by Friction /Outwards
100
What is the full name of the scientist the invented the first battery known as the Voltaic “pile?” /(Units) I, the unit of _____________ is measured in _______________.
Alessandro Volta /Current, Amps
100
Name two units which is used for electrical energy consumption? /What does kW.h stand for?
1. Amperes (A) 2. Watts (W) 3. Joules (J) /Kilowatt-hour
100
What does AC stand for?
Alternating Current
100
Is Silver-Oxide a primary or secondary cell?
Primary cell
200
Which of the following hold the most electrons: Human Hair, Saran Wrap, Polyester, or Paper? /A _____________ _______________ _________________ is the movement of electrons in a substance, caused by the electric field of a nearby charged object, without direct contact between the substance and the object.
Saran Wrap /Induced Charge Separation
200
What is the connection of two or more cells called? /How is the ohm’s law often written as?
Battery /V=IR
200
A simple electrical device called a ________, can change the potential difference of an alternating current. /In Canada, any household appliance that is sold must have an ________ _____.
Transformer /EnerGuide label.
200
How many electrons are there in a charge of 1 coulombs?
6,250,000,000,000,000,000
200
Is Nickel-metal hydride a dry or wet cell?
Dry cell
300
What are the material(s) called when electrons can move fairly well between atoms? /What is a charged atom or group of atoms called?
Semiconductor /Ion
300
A __________ __________ contains an electrolyte that is paste. /A technician is checking the circuits on a computer. The technician measures the current of the circuit as 0.76A. The potential difference of the circuit is 14V. What is the resistance?
Dry cell /Therefore, the resistance is about 18.4 ohms.
300
Electric current is generated at ______ V or less. /_________ _____ is the electricity that is consumed by an appliance or device when it is turned off.
20 000 /Phantom load
300
How much charge is in a 1.5 V battery each generating 18 joules?
Therefore, the charge is 12.
300
The 
two locations in a cell that must be connected to other components are the __________ _________ and the __________ __________.
Positive terminal & negative terminal
400
What device is used to detect the presence of an electric charge? /A _________________ __________________ is a type of cleaner that removes unwanted particles and liquid droplets from a flow of gas.
Electroscope /Electrostatic Precipitator
400
A cell that can be recharged is called a _______________ ____________? /Name two from the four factors that affect the resistance of a wire.
Secondary cell /1. The type of material. 2. The length (A longer wire has greater resistance.) 3. The diameter (A wire with a larger diameter has lower resistance.) 4. The temperature (A hotter wire has greater resistance.)
400
________ _________ and fuses are safety devices that are placed in series with other circuits, which lead to the appliances and wall outlets in your home. /What is a wind farm?
Circuit breakers /A wind farm is many large wind turbines at one location.
400
If the difference in potential energy is 20 J. The charge is 15 C. How much is the amount of volts?
Therefore, the amount of volts would be 1.3 V.
400
A ________________ _______________ uses standard symbols to represent the components of an electric circuit and their connections.
Circuit diagram
500
Name the three Laws of the Electric Charges? /Which element is essential to good health, has a peculiar and useful electrical property, and is a very good conductor when exposed to light?
1. Like charges repel 2. Opposites attract 3. Charged & neutral attract /Selenium
500
When a light is switched on, the circuit is a(n) __________ circuit? /When electric charge can flow through a material with no resistance, the material is called a _________________.
Closed /Superconductor
500
The _______ _______ of an appliance is its rate of use of electrical energy. /What does DC stand for?
Electrical power /Direct Current
500
A _____ ____ converts sunlight into electrical energy.
Solar cell
500
A voltmeter is always connected ___________ to measure the potential difference across the load.
Parallel