In this animated object, students view an example of how to convert rotational velocity to linear velocity. They then work practice problems.

Learners examine the impedance matching capability of a transformer and how to select the proper turns ratio to achieve this function. A brief quiz completes the activity.

Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.

In this learning activity you'll determine the voltages that can be topped off of a multi-resistor voltage divider that has one main power source.

In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

Learners read about the concepts of true power, reactive power, and apparent power, and are introduced to the power factor formula. A short quiz completes the activity.

Students read about the concept of true power and view examples of how it is dissipated as heat is provided.

Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.

Students read an explanation of reactive power in a power distribution system involving motors, generators and transformers. A brief quiz completes the activity.

You'll practice solving problems using the rule for multiplying powers with the same base.

Grade 8 Physical Science

Tic-Tac-Toe Game of Ergonomic Principles (Ref: Ergonomics: The Study of Work OSHA 3125)