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The Zener Diode: Practice Problems

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Students complete 10 practice problems. These deal with the determination of series current, zener current, and load current, and if the zener diode is operating in the breakdown region.

The Force of a Hydraulic Cylinder

By Terry Bartelt

In this interactive object, learners read how to determine the force created by a hydraulic cylinder during extension and retraction. A brief quiz completes the activity.
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Opens and Shorts in a Parallel Circuit

By Terry Bartelt

Learners examine the changes in current and voltage values in a parallel circuit when open and short conditions develop. Ohm's Law calculations are shown, and a brief quiz completes the activity.

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Transistor DC Analysis Practice Problems: Circuit #3

By Patrick Hoppe

Learners analyze an emitter-biased npn transistor circuit. A "help" screen is available.
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Kirchhoff's Voltage Law with Complex Numbers

By Patrick Hoppe

Learners view a demonstration of Kirchhoff's Voltage Law using complex numbers for an ac circuit.
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Total Impedance of a Series Circuit Using Complex Numbers: Practice Problems

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

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Total Impedance of a Parallel Circuit Using Complex Numbers: Practice Problems

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Total Impedance for Series-Parallel Circuits Using Complex Numbers: Practice Problems

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