Electricity Building Blocks
These are free to move from one atom to the other and are found in the valence shell of an atom.
Electrons
When moving a magnet through a coil of wire, what is induced across the coil?
voltage
What is the purpose of a capacitor?
stores electricity
What happens to current if resistance is reduced?
current increases
What unit of measurement is used for current?
amps
Recognized by the FAA for current flow.
Electron Flow
What flows through a coil of wire to produce a magnetic field?
Current
Name two of the three factors that affect the amount of electricity a capacitor can store.
Area of the plates, thickness of the dielectric, and material from which the dielectric is made
The length of a wire is _________ proportional to its resistance.
directly
Whose law states that the sum of the currents into a junction or node is equal to the sum of the currents flowing out of that same junction or node?
Kirchhoff
The push or pressure felt in a conductor that ultimately moves the electrons in a flow.
Electromotive Force (emf)
When two or more inductors having different inductances are connected in parallel, the total inductance is what?
Less than the inductance of the lowest rated inductor
What does a capacitor do to direct current (DC)?
blocks
Calculating the total resistance of resistors in series can be found by doing what?
finding the sum of all the individual resistors
In Kirchhoff's Voltage Law, the sum of all the voltage drops are equal to what?
total source voltage
What type of material are iron & iron alloys, alnico, and steel considered to be?
Ferrous
Which device changes electircal energy of a given voltage into electrical energy at a different voltage level?
Transformer
The capacitor used should have a working voltage of at least what percent greater than the highest voltage applied?
50 %
The cross-sectional area of a wire is ___________ proportional to its resistance.
inversely
What is defined as the rate of energy consumption within a particular system?
power
High permeability and low reluctance are key to a strong what?
magnetic field
What class of transformer is used for stepping up or stepping down voltages?
voltage transformer
What unit of measurement is used for capacitance?
farads (micro/pico)
Resistance, capacitance, and inductance contriute to the total opposition a circuit or componenet offers and is known as what?
impedance
!!DAILY DOUBLE!! Watt's Law is the relationship between which three variables?
power, voltage, and current