Learners examine three formulas than can be used to find dc power. Examples are given.

The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.

Students read how to calculate the size of a hydraulic cylinder that is required for a particular application. Mathematical formulas are provided.

In this interactive object, learners examine the operation of an inverting operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.

The current-to-voltage conversion of the transresistance amplifier is examined. The formulas for output voltage and impedance are defined and an example ties the concepts together.

Students are introduced to the non-inverting amplifier configuration. The formulas for closed loop gain and bandwidth are shown, and an example is given.

In this animated object, students examine the concept of wattage dissipation and the three Watt's Law formulas.

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

Students view the formulas to be used to convert a series impedance to a parallel impedance.

In this animated object, learners examine formulas for displacement and velocity ratios. They also view examples and calculate velocity and the velocity ratio.

In this animated object, learners examine the operation of a summing operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

In this interactive object, learners identify charges on ions, write new formulas based on charge, and balance equations using coefficients.

In this animated and interactive object, learners examine the definitions and formulas for radius, diameter, circumference, and area. Students also solve practice problems involving the circumference and area of a circle.

Students examine the full-wave rectifier. They review appropriate formulas and examples of actual circuits.

Students read an explanation of the common-source and source-follower amplifiers. Gain formulas are developed and an example is given.

Students read an explanation of the summing amplifier and the formulas for closed-loop gain. An example is given.

Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.

Learners study the properties of a right circular cone and use geometric formulas to find volume and surface area.