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

Learners use two calculations to prepare a graphical solution to the biasing of bipolar junction transistors and junction field effect transistors. This method eliminates the problem of having to re-calculate the operational Q point when dealing with hard saturation.

In this learning activity you'll review safety considerations for persons using a hydraulic iron worker and takes a short quiz.

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

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

Students read how to determine the total impedance of a parallel circuit using complex numbers. The "J" term is used in the calculations.

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 follow the steps for finding the total impedance for a series-parallel circuit. Several examples are given.

Basic Internet concepts for kids

Test your knowledge of multimedia acronyms commonly used in the computer industry.

Converting hexadecimal, binary and decimal numbers.