Curated OER
AC Waveforms
In this AC waveforms instructional activity, learners answer ten questions about AC voltage, frequencies of waveforms and they interpret diagrams of AC voltage.
CK-12 Foundation
AC Transformer
High voltage power lines deliver electricity to homes, but each home requires low voltage. How does the energy get converted so it can be used safely? Pupils explore alternating current and transformers through a simulation. They control...
It's About Time
AC and DC Currents
An informative physics lesson includes two teacher demonstrations, one on AC currents and the other on DC currents, allowing pupils to take notes while watching. The resource includes questions to assign as homework or during class...
Curated OER
Fall 2005 Midterm Exam #1
You've got the power! With this physics midterm, you have the power to assess learners' grasp of electricity concepts. The exam is neatly formatted and provides a variety of question types: true or false, multiple choice, and problem...
Curated OER
AC Phase
In this AC phase worksheet, students answer 24 questions about AC and DC voltages, phasor diagrams, sine wave graphs and Lissajous figures.
Bonneville
DC to AC to DC Efficiency
The power to learn about AC and DC power lies within everyone. The fifth of seven installments in the Off the Grid unit continues the investigation of the efficiency of a USB charger. Individuals use an inverter that converts DC power to...
Curated OER
AC metrology
In this learning exercise, students are asked 11 questions about AC currents and transformers and volt meters. Students can check answers online.
Curated OER
AC Power
In this physics instructional activity, 12th graders calculate the power generated in AC circuits. They solve and write short answers to 47 questions about given circuits.
Curated OER
Series and Parallel AC circuits
In this AC circuits worksheet, students answer 75 questions about series and parallel circuits including building and analyzing their own circuit mathematically, interpreting schematics of AC circuits and finding total impedance of...
Curated OER
AC Network Analysis
In this AC networks worksheet, students analyze and answer 24 questions about AC circuits. They calculate impedance values, they determine phase shifts, and they solve complex number arithmetic used to analyze AC circuits.
Curated OER
AC Negative Feedback Op-amp Circuits
In this electrical circuit worksheet, learners draw a schematic design and build a op-amp model to show understanding of AC-negative feedback op-amp circuits before answering a series of 14 open-ended questions with schematics. This...
Curated OER
Motor Control AC Voltage
Students demonstrate that motors work on two different voltages. They connect a single-phase AC motor to run on different voltages.
Curated OER
Series-Parallel Combination AC circuits
In this AC circuits worksheet, learners answer 26 questions about series-parallel combined circuits,. They find capacitance, resistance, total impedance, the output voltage and they complete schematics of the circuits.
Curated OER
Voltage/current converter opamp
In this physics worksheet students complete several circuit building exercises then answer a series of short answer questions based on diagrams.
Curated OER
2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
Curated OER
2001 U.S. National Chemistry Olympiad National Exam Part II
Only eight problems are on this competitive national chemistry exam. It required the balancing of chemical equations, solving stoichiometry questions, and more. This is part two of three of the national exam. Also available is a local...
Curated OER
Fall 2003 Midterm Exam #1
Electricity is the focus of this college-level midterm exam. It requres physics learners to answer multiple choice and short answer questions in addition to evaluating several diagrams and graphs. This is appropriate for most high school...
Curated OER
Peak, Average, and RMS Measurements
In this voltage worksheet, students answer ten questions about RMS amplitude, DC power sources, AC alternators and the measurements used for voltage in power lines.
Curated OER
Step-up, Step-down, and Isolation Transformers
In this circuits and transformers worksheet, high schoolers answer 34 questions about loads, voltage, currents and waves associated with circuits.
Curated OER
Telegraph System
In this telegraph system instructional activity, students design a telegraph station and answer 4 questions about the voltage, the resistor values and various modifications made to their design.
Curated OER
Passive Integrator and Differentiator Circuits
In this circuits activity, students answer 25 questions about passive integrator circuits and passive differentiator circuits given schematics showing voltage. Students use calculus to solve the problems.
Curated OER
Solar Kit Lesson #13 Solarize a Toy
Students work in teams they select a low-power toy, game, or electrical deive to "solarize," or convert to solar power. They determine the operating voltage of their chosen device and design a solar array to provide this level of...
Curated OER
Mutual Inductance
For this mutual inductance worksheet, students answer 12 questions about electric currents, voltage, magnetic coupling, and magnetic flux as they relate to inductance.
Curated OER
Solar Kit Lesson #13 - Solarize a Toy
Physical science or technology classes will be invigorated by this challenge: to convert a toy, game, or other device to run on solar power. In doing so, they will design the appropriate solar arrays. This is an A+ lesson, complete with...