Students examine the first and second approximations of a voltage source. A "stiff" voltage source is defined, and several examples are given.

In this learning activity you'll explore the effect of connecting voltage sources in series to increase voltage applied to a load.

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.

This is an animated troubleshooting exercise that takes voltage measurements to determine the fault of three different series circuits. There are six review questions that enable the learner to determine the effectiveness of the troubleshooting presentation.

In this learning activity you'll explain how voltage and resistance in a series circuit affect current flow.

Students review the Voltage Divider Rule and work practice problems.

The effect of connecting voltage sources in parallel to increase amperage to a load is presented.

Students study the concept that the voltage drop across a series circuit resistor is proportional to its resistance. They then complete a brief quiz.

The learner will understand how a zener diode maintains a constant voltage as the resistance values of a load change.

In this animated and interactive object, learners examine how changes in applied voltage affect the current and voltages in a zener diode voltage regulation circuit. A short assessment completes the activity.

Learners examine how voltages and currents vary in a series RLC circuit as the applied frequency changes.

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.

Learners review the VDR and work six problems. Immediate feedback is given.

In this animated object, learners drag resistors of the proper value into a series circuit to cause a required amount of current to flow. Seven review questions complete the activity.

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

In this animated object, learners view the keystrokes on a TI-30XIIS calculator that are required to solve for the instantaneous voltage of a discharging RC circuit.

Students view the keystrokes of a TI-30XIIS calculator that are required to solve for the instantaneous voltage of a charging RC circuit.

In this animated object, learners view the keystrokes on a TI-35X/36X calculator that are required to solve for the instantaneous voltage of a discharging RC circuit.

Students work five practice problems to determine the Thevenin voltage of DC circuits.

Students read about decibel power gain and decibel voltage gain. Examples are given for each.