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Examine the basic nature of electricity
Assessment Strategies
by completing a written assessment
Criteria
apprentice lists three major sub-atomic particles
apprentice describes the spatial relationships between sub-atomic particles
apprentice explains the significance of the valence shell
apprentice explains the law of attraction and repulsion charges
apprentice describes centrifugal forces
apprentice describes the significance of free electrons
apprentice differentiates between positive and negative ions
apprentice explains a conductor, insulator, and semi-conductor as they related to the electrons in the valence shell
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Perform basic mathematical functions
Assessment Strategies
by completing a written assessment
Criteria
apprentice performs addition, subtraction, multiplication, and division of fractions
apprentice converts fractions to their decimal equivalents
apprentice performs basic functions with decimal numbers (addition, subtraction, multiplication, and division)
apprentice performs basic mathematical functions using positive and negative numbers
apprentice determines the square and square root of a given number
apprentice stores and retrieves values from the calculator memory
apprentice converts decimal numbers to their "powers of ten" equivalent in scientific notation
apprentice assigns the proper metric suffixes to a number expressed in E notation
apprentice performs basic mathematical functions with numbers expressed in scientific and E notation with the use of a calculator
apprentice rounds numbers to the three most significant digits
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Compare sources of electricity
Assessment Strategies
by completing a written assessment
Criteria
apprentice identifies sources of potential difference (EMF)
apprentice identifies basic effects of electron flow
apprentice compares and contrasts the sources and effects
apprentice differentiates between electron flow and conventional current flow
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Apply units of measure for electrical quantities
Assessment Strategies
by completing a written assessment
Criteria
apprentice matches electrical terms and definitions
apprentice identifies the letter abbreviation used for the terms
apprentice applies the common unit of measure for each term
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Calculate electrical quantities of voltage, current, resistance, power, and conductance using Ohm's law
Assessment Strategies
by completing a written assessment
given a circuit
Criteria
apprentice uses Ohm's law
apprentice calculates voltage
apprentice calculates current
apprentice calculates resistance
apprentice calculates power
apprentice calculates conductance
apprentice verifies accuracy
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Calculate the voltage, current, resistance, and power dissipation for the series D.C. circuit
Assessment Strategies
by completing a written assessment
by conducting test procedures on a circuit you have constructed in the lab
Criteria
apprentice builds the circuit as directed
apprentice measures and records the correct values of each resistor
apprentice measures and records the total resistance
apprentice energizes the circuit and measures the source voltage
apprentice measures and records the voltage drops across each resistor
apprentice measures and records the current the circuit current
apprentice disconnects the circuit and prepares meters for storage
apprentice applies appropriate safety procedures
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Determine how resistance affects an electrical circuit
Assessment Strategies
by completing a written assessment
Criteria
apprentice identifies the type of resistor
apprentice uses color code to determine the resistive value of the resistor
apprentice uses a multi-meter to measure a resistors value
apprentice compares calculated and measured values
apprentice determine the effects the power ratings of resistors
apprentice applies Ohm's law/power formula to calculate the power dissipation of a circuit
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Analyze a resistive series circuit
Assessment Strategies
by completing a written assessment
by building and analyzing a series circuit in the lab
Criteria
apprentice demonstrates proper use of electrical measuring devices
apprentice calculates values for current, resistance, voltage drops, power dissipated for each resistor, and total power dissipation
apprentice constructs the series circuit
apprentice measures the components for the following values: resistance of each resistor, total resistance, source voltage, voltage dropped across each resistor, total current
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Analyze a parallel circuit
Assessment Strategies
by completing a written assessment
by constructing and analyzing a parallel circuit
Criteria
apprentice demonstrates the proper use of measuring devices
apprentice calculates the values for total current, branch currents, voltage drops, resistance, power dissipated for each resistor, and total power
apprentice constructs the parallel circuit
apprentice chooses the appropriate measuring tool
apprentice measures components for the following values: resistance of each resistor, total resistance, source voltage, voltage drop across each resistor, each branch current, and total current
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Analyze combination circuits
Assessment Strategies
by completing a written assessment
by building and analyzing a combination circuit
Criteria
apprentice calculates values for current, resistance, voltage drops, and power dissipation
apprentice constructs the combination circuit
apprentice chooses the appropriate measuring tool
apprentice measures resistance of each resistor and total resistance, voltage drop across each resistor and voltage source, and current at two or more points in the circuit
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Compare conductors and insulators
Assessment Strategies
by completing a written assessment
Criteria
apprentice gives examples of different types of electrical conductors and insulators
apprentice explains the concept of specific resistance
apprentice describes the effect of temperature on resistance
apprentice performs calculations related to conductors
apprentice identifies various types of conductors and their uses
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Analyze principles of magnetism
Assessment Strategies
by completing a written assessment
Criteria
apprentice defines magnetic terms
apprentice applies the theory of magnetic domains to describe the molecular structure of magnetic materials
apprentice sketches lines on a drawing to represent the flux patterns that would surround a magnetic object
apprentice lists the major characteristics of flux
apprentice applies the characteristics of flux to the describe the operation of various devices
apprentice applies the characteristics of flux to describe the process of shielding
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Examine how electromagnetic devices operate
Assessment Strategies
by completing a written assessment
Criteria
apprentice defines electromagnetic terms
apprentice describes how and why electrons flowing through a conductor, produces a measurable magnetic field
apprentice identifies the facts that affect the strength of that field
apprentice explains why bending a conductor into a coil intensifies the magnetic field that surrounds the coil
apprentice lists the factors that affect the magneto-motive force of a coil
apprentice describes how an alternating magnetic field induces voltage across a field
apprentice describes the motor effect
apprentice explains how a simple generator works, the principles involved, and the factors that affect the value and polarity of the voltage induced
apprentice lists three requirements necessary to induce voltage
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Examine how motor action relates to the operation of electrical devices
Assessment Strategies
by completing a written assessment
Criteria
apprentice lists the requirements for motor action
apprentice explains how to reverse the direction of motor action
apprentice defines counter electromotive force
apprentice defines terms related to motor action
apprentice describes the basic operating principles of a DC motor
apprentice lists and describes the components used in the construction of the following electromagnetic control devices: solenoid, contactor, and relay
apprentice describes the operation of a dynamic microphone