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Voltage and Current

Electrons flowing through a circuit create a current. Voltage is the force that drives the current between two points.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

Voltage and Current

Students will learn the concepts of voltage and current and the relationship between current and charge.
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• Interactive Simulations

Power Lines

Learn about the relationship between electric potential, current, and resistance in the context of high-voltage AC power lines
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• Interactive Simulations

Electric Analogies

Explore a different way of thinking about electricity as a way to become familiar with the concept of potential, current, and resistance
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• Interactive Simulations

Dollhouse

Learn about the analysis of parallel circuits in the context of a realistic household circuit.
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• Interactive Simulations

Marquee Lights

Learn about different ways you can wire an electric circuit, and how the brightness of the lights depends on how they are configured.
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Voltage and Current Quiz - PPB

Quiz on voltage and current.
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• Critical Thinking

Voltage and Current Discussion Questions

A list of student-submitted discussion questions for Voltage and Current.
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• Study Guide

Electrical Systems Study Guide

This study guide is an overview of circuits and circuit diagrams. It discusses voltage, current, Ohm's law, loop rule, and junction rule and reviews how to solve resistors in series, resistors in parallel, capacitors in series, and capacitors in parallel.
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