Learners read a description of the function of the coupling switch on an oscilloscope and how its setting affects measurements of DC, AC, and combined voltages. A brief quiz completes the activity.

In this animated object, students view an explanation of how current, voltage, and the magnetic field strength of a series RL circuit change during five time constants. A brief quiz completes the activity.

In this interactive and animated object, learners examine how dc voltages develop across capacitors that are connected in series and in parallel.

Learners follow a step-by-step explanation of how to test fuses and circuit interrupting devices.

In this learning activity you'll apply the Pythagorean Theorem to isosceles and equilateral triangles.

Learners apply the Law of Cosines to determine forces using a TI-36X calculator in this animated object.

In this interactive and animated object, learners apply the Law of Cosines to determine forces using a TI-86 calculator.

In this interactive learning object, students calculate a resultant of multiple forces acting in a concurrent, coplanar condition.

The learner calculates the resultant of multiple forces acting in a concurrent, coplanar load condition.