Student Performance Objectives
The following
student performance objectives (including both knowledge and skills) are based
on the "Electricity
Visualized"
unit from CASTLE (Capacitor-Aided
System for Teaching and Learning
Electricity). At the conclusion of this unit, students will
demonstrate the ability to:
- define what constitutes a closed and open circuit by making reference to
a battery, a bulb, and connecting wires.
- distinguish between conductor and insulator.
- use schematic symbols to characterize an electrical circuit.
- define series and parallel circuit components.
- determine the equivalent resistance of series, parallel, and mixed circuits.
- explain the results of putting batteries in series and parallel (e.g, with
respect to voltage and current)
- define and distinguish current, voltage, amperage, capacitance, and resistance.
- use a multimeter correctly to measure voltage drops across circuit elements
and current through various parts of a circuit.
- use Ohm's law to work out voltage drops and current in various parts of
parallel, series, and mixed circuits.
- state the limitations of Ohm's law (e.g., a battery can't adequately power
a low-resistance hair dryer).
- demonstrate conservation of energy and charge in an electrical circuit.
- explain the workings of a capacitor.
- create and/or interpret schematic diagrams with symbols for batteries, resistors,
capacitors, etc.
- predict the equivalent resistance of parallel, series, and mixed combinations
of capacitors.
- use the analogy of a football team and a water piper to associate voltage,
current, and resistance.
- explain what happens when a capacitor discharges through a light bulb.
- explain when a given voltage is applied across light bulbs in series and/or
parallel.
- use the analogy of air pressure and air flow through a straw to relate voltage
and current.
- use color coding on a resistor to determine both resistance and tolerance.
- explain the meaning of resistance and capacitance.
- determine the power of a circuit.
- explain safety concerns associated with an electrical circuit.
- distinguish between AC and DC current.
- calculate electrical field strength inside a capacitor.
- relate voltage to charge in a capacitor.
- calculate the electric field force on a given charge.
- distinguish between electric field and electric force.
- wire a simple circuit from a wiring schematic.
- make, read, and interpret various graphs and tables.
- given a setup and objective, to determine whether one or more parts is missing
to reach the objective, and to name those parts.
- solve problems, new to a student, involving the use of laboratory equipment.
- solve problems based on data obtained in the laboratory.
- recognize an unsafe circuit and correct it (short circuit, overheating of
circuit elements, etc.)
- identify and know the use and limitations of capacitors, resistors, batteries,
galvanometers, and multimeters.
- predict what will happen, on the basis of theory, what is likely to happen
with a given circuit set up.