What is oil, fur, wool, rubber, glass and plastic?
100
The unit of measurement for electric current.
What is an ampere? (A)
100
Definition of voltage.
What is the electric potential energy per coulomb of charge?
100
The unit of measurement for resistance and its symbol.
What is the "ohm" and the Greek letter "omega (Ω)"?
200
Define the Law of Electric Charges.
What is like charges repel and unlike charges attract?
200
What are 2 characteristics of an effective lightning rod?
What are made of conducting material, must have a sharp point and be placed above the object it is protecting?
200
1 coulomb = ? electrons
What is 6.25 x 10 to the power of 18?
200
The formula for finding voltage.
What is V = deltaE/Q?
200
The formula for finding the resistance of a conductor.
What is R = V/I?
300
There are slight shifts of charges in the neutral object but does not gain or lose electrons. (Give term)
What is induced charge separation?
300
Name 4 good conductors.
What are silver, copper, gold, aluminum, tungsten, and nickel?
300
The difference between conventional current and electron flow.
What is - conventional current is the direction that a positive charge would take, and electron flow is the flow of negative charge from the negative terminal to the positive terminal?
300
State the rule for finding the voltage of a circuit with cells in series, and the voltage of a circuit with cells in parallel.
What is - series: add the voltage of the cells together. VT=V1+V2.... parallel: always the same as the voltage of one cell. VT=V1=V2?
300
A 92 ohms resistor has a current of 78mA. The voltage in the resistor is.... _________.
What is 7.2V?
400
Give 3 examples of charging by friction.
What are combing hair, drying clothes and rubbing a balloon on your hair and sticking it to a wall?
Answers may vary.
400
Describe how the Faraday cage works.
What is when discharge from an electrostatic generator struck the outside of a room that has been coated with metal foil, there is no excess charge in the room so nothing inside reacts?
400
A light bulb has a current of 0.073 A flowing through it. The number of electrons that pass through the light bulb in 45 seconds is _______.
What is 2.053125 x 10 to the power of 19?
400
The minimum amount of electric cells of 2.0V needed for a car battery that produces 12V. They would be arranged in ________.
What is 6? in series
400
The colour bands on a resistor are yellow, orange, and blue in that order. The resistance is ______.
What is 43 000 000 plus or minus 20%?
500
Give one example (each) and define charging by conduction and charging by induction.
(conduction) What is objects touch and an electric charge is transferred from one object to another? What is walking on a carpet and touching a metal doorknob?
(induction) What is objects are charged without touching? What is dust buildup on a screen?
500
Describe how a Van de Graaff generator works.
What is an electric motor turns a rubber belt on a roller past a negatively charged comb. The belt carries negative charges and carries them up to the collecting comb. The negative charges leave the belt to the collecting comb. THey are conducted to the large hollow metal sphere where they spread across the outside surface of the sphere.
500
The formula for calculating current. Include what each letter represents and the unit of measurements.
What is I = Q/t where I is current (in amperes), Q is quantity of electric charge (in coulombs) and t is the time (in seconds)?
500
A voltmeter is placed in _________. while an ammeter is placed in _________. (series or parallel)
What is parallel, series?
500
A flashlight has a filament with a resistance of 10.7 Ω. The batteries provide 2.8 V. The current is _______.