Electrical Basics
This is a measure of electric charge.
What is a coulomb?
These were what natural magnets were known as.
What are lodestones?
This is the material between the plates of a capacitor.
What is a dielectric?
Heat affects resistance in a circuit in this way.
What is true? (Heat increases resistance)
This is how many watts equal one horsepower.
What is 746 watts?
This law states that V = IR.
What is Ohm's Law?
This generates magnetism.
What is electron spin?
This is a device for lightning protection.
What is an arrestor?
This formula is used to determine the total resistance of a series of resistors.
What is RT = R1 + R2 + R3 + ...?
This is how many BTU/hour equal one kilowatt.
What is 3,412 BTU/hour?
These are the components of an atom (except one imposter).
What are protons, neutrons, and electrons? (Graviton is not a component)
The strength of an electromagnet is expressed in this unit.
What are amp-turns?
This is why capacitors in an AC circuit appear to conduct current.
What is the continuous charging and discharging of plates as AC voltage changes, creating what appears to be current flow?
This is how to calculate the total capacitance in a series circuit.
What is 1/CT = 1/C1 + 1/C2 + 1/C3 + ...? (False that you add capacitances in series)
These are the two most common materials used for electrical wires.
What are copper and aluminum?
This is a measure of current.
What is an ampere?
This is the difference between self-induction and mutual induction.
What is the difference between a changing current in the same coil (self) versus a changing current in one coil inducing voltage in a nearby coil (mutual)?
This is what a potentiometer is.
What is a variable resistor?
In a resistor-only circuit, this is true about voltage drops.
What is true?
When performing lockout tagout, these people should participate.
What is all members of the team?
These are the six ways electricity can be generated.
What are electromagnetic induction, photovoltaic effect, chemical reaction, thermoelectric effect, piezoelectric effect, and static electricity?
Flux density is defined as this.
What is field strength times the absolute permeability of a magnet?
These are the components of a DC motor.
What are the rotor, stator, and brushes? (A relay is not a normal component)
This is how to determine the resistance value from a resistor color code.
What is reading the color bands to determine resistance value and tolerance?
These factors determine the ampacity of a wire.
What are diameter, coating, and material of wire? (Length is not a factor for ampacity)