Download Chapter 20 and 21 study guide

Chapter 20 and 21 study guide
Magnetism and Electricity
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Of the 3 parts of an atom, which is most important in regards to electricity and magnetism?
Where do the negatively charged particles of an atom live?
What causes a material to have a negative charge? Positive Charge?
Define Electric Charge!
What causes a Net Electric Charge?
The SI unit for charge is the________.
Like Charges _______ and Opposite charges_________.
Define Electric Force. Bunn rules.
Where do we find an electric field?
Strength of electric force depends on what 2 things???
____________ is the behavior of electric charges and how charge is transferred.
List the 3 ways charge can be transferred. Give an example of each.
What is static discharge?
In terms of movement of positive and negative charge, describe how you are ZAPPED when you
touch a door handle.
_____ is the continuous flow of electrons, and is measured in the SI unit_______.
List the 2 types of current. Describe how electrons flow in each. Give common sources for each.
What is the difference between an insulator and a conductor? Choo Choo!
Give examples of 2 good conductors, then give examples of 2 good insulators.
_____________ is the opposition to the flow of current, and its SI unit is the ____
What 3 factors affect resistance? How?
A __________ has almost zero resistance.
Define Voltage. (do not just define Potential Electrical Difference, or else)
Give the name of the device that converts chemical energy to electric energy.
Give Ohm’s law.
To keep constant current when resistance increases, what must we do?
Give the formulas for Electrical Power, Electric Energy, and Voltage. You must be able to
manipulate these equations to solve for Current, Resistance, Volts, Kilowatts etc.
Draw a complete parallel circuit and a series circuit. Use correct symbols, and show flow
of electrons.
What are the 3 things a complete circuit needs??
How are magnetic force and electric force similar? Different?
Magnetic force depends on what?
How does the Earth get its’ magnetic poles?
Where is the force of a magnet the strongest?
Like magnetic poles______ while opposite poles _______.
Please define magnetic field.
What is the difference between the Earth’s magnetic and geographic poles?
Give the characteristics of ferromagnetic materials.
How does the alignment of electrons relate to magnets?
What is a magnetic domain?
Which two forces interact to make electromagnetic force? this is not difficult
How do we create an electromagnet?
How do we increase the strength of a solenoid? What about the flow
Moving electrons in a solenoid create _________ism.
43. Moving magnets in a coil of wires creates _________.