29 Questions
What is the maximum number of electrons that can occupy the second shell?
8
Why are valence electrons relatively loosely bound to the atom?
Because the force of attraction between the nucleus and the electron decreases with distance
What is a characteristic of conductor materials?
Having one to three valence electrons
What determines a material's electrical properties?
The number of electrons in the valence shell
What is the purpose of voltage in an electric circuit?
To move electrons from one point to another
Which of the following is NOT a type of material?
Convector
What is voltage analogous to in a hydraulic system?
Pressure
What is the function of a voltmeter?
To measure voltage
What is the unit of measurement for voltage?
Volts
What type of energy is used to produce voltage in a battery?
Chemical energy
What is the mathematical representation of voltage?
v = w/q
What is an ideal DC voltage source?
A source that provides a constant voltage
What is one of the principal applications of resistors?
To divide voltage
How are resistors categorized?
As fixed or variable
What is the tolerance of a resistor with a fifth band of green?
±0.5%
What is the resistance value of a resistor with a color code of red, violet, black, gold, and red?
R = 27,000 ±10%
What is the purpose of the first band on a resistor?
To indicate the first significant digit
How many bands does a Five-Band Color Code have?
5 bands
What is the primary function of strain gauges?
To sense mechanical motion
What are the three physical characteristics that affect the resistance of a wire?
Type of material, length of wire, and cross-sectional area
What is the unit of measurement for inductors?
Henry (H)
What is the symbol for an Operation Amplifier (Op-Amp)?
Op-Amp
What is the formula for the resistance of a wire?
R = ρL/A
What is the definition of an atom?
The smallest particle of an element that retains the characteristics of that element
What is the name of the particle that is the basic unit of positive electrical charge?
Proton
What happens to the electrons in the outer orbit of an atom when they break away?
They become free electrons
What is necessary for current to exist in a circuit?
Voltage must be applied to a circuit
What is the purpose of a battery in a circuit?
To convert chemical energy to electrical energy
How is an ammeter connected to a circuit to measure current?
In series with the current path
Understand how electron shells are organized and the energy levels of electrons in an atom. Learn about the force of attraction between the nucleus and electrons.
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