In this interactive learning object, the learner practices sizing a tank-type water heater for one- and two-family residences, townhouses, and apartments with individual water heaters.

The student is asked to identify measurements on a dial caliper.

Learners review Ohm's Law and 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.

Students read the terms associated with the Bipolar Junction Transistor (BJT) . They also view formulas for dc current and voltage.

In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

Students work six practice problems to determine the total impedance of a parallel circuit.

Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.

Students answer five questions concerning magnetism.

Choose the correct test term for the definition

Basic Internet concepts for kids

NSTMs - Naval Systems

Explores the gender digital divide occurring within society.