Which material, originally called electrum, was the first material observed to exhibit electrical effects?
Amber
What type(s) of electrical charges could an object have?
Positive, negative, and neutral
If one object is positively charged and another is negatively charged, what type of force will exist between them?
Attractive
What is a scientific term for an area of space where there is a force present?
Force field
What is an electric field?
The proportion of electrostatic force to the quantity of charge feeling that force
How should the strength of electric fieldlines be drawn?
The lines will be closer together where the force field is stronger, and get farther apart where the force field is weaker
What is the name for the rate at which charge flows through a conducting path?
Electric current
What is the name for the quality of a material that determines how any object made from that material will resist the flow of electricity?
Resistivity
Ohm's law relates which three quantities and their proportional effects within a circuit?
Voltage, resistance, current
What is overall series voltage equal to?
The sum of every resistor’s voltage
What is overall parallel voltage equal to?
Each individual resistor’s voltage
What is overall series current equal to?
Each individual resistor’s current
What is overall parallel current equal to?
The sum of each resistor’s current
What is equivalent series resistance equal to?
The sum of each resistor’s resistance
What is equivalent parallel resistance equal to?
The inverse of the sum of the inverses of each resistor’s resistance
1/(1/R₁ + 1/R₂ + 1/R₃ + …)
What is another name for magnets, used during early discoveries of their properties?
Lodestone
What is the largest magnet near us, and is it the strongest magnet near us?
The Earth, but no. That would cause a few problems.
What situation will a magnetic field be created, according to Ørsted's experiments?
An electric current being turned off and on again
If wire has the positive current running directly away from you, what direction will the magnetic field lines point?
Clockwise around the wire
If a positive current runs clockwise through a coil, which direction will the magnetic field lines near this wire point?
The same direction as the wire coils
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