Build an intuitive understanding of how electric circuits work, and the underlying concepts of current, voltage, resistance and power.

Learn how to light bulbs using loops of current

Use switches to control which bulbs turn on

Circuits

Current Loops

Short Circuits

Choosing Bulbs

Splitting Current

Predict how current splits between different branches in circuits

Use ammeters and conservation of current to deduce unknown values

Current

The Path of Least Resistance

Bulb Brightness

Changing Current

Different Bulbs

Conserving Current

Relate battery voltage to voltage drops in simple loop circuits

Discover how voltage drops across multiple parallel paths

Voltage

Measuring Voltage

Voltage Around Paths

Branched Voltage

Calculate the power of a bulb from the voltage across it and the current flowing through it

Quantify the resistance of electrical components

Power and Resistance

Power and Brightness

Deducing Power

Resistance

Solving for Resistance

Deduce the voltage and current of components throughout a circuit

Calculate the effective resistance of components in different configurations

Circuit Analysis

Predicting Current

Controlling Current

Combining Resistance

Dividing Resistance

Total Resistance

Voltage and Resistance

Discover when higher resistance leads to higher power and when the opposite is true

Predict which component in a circuit will consume the most power

Comparing Power

Resistance and Brightness

Relative Resistance

Sharing Amps and Volts

Parallel Volt Shares

Power and Bulb Pairs

Find the voltage between different points in a circuit

Predict whether a bulb will light by considering voltage difference

Analyzing Voltage

Subtracting Volts

Comparing Points

Bulbs with Voltage

Build simple computers out of logic gates.

Circuits

Level 1Circuits

Level 2Current

Level 3Voltage

Level 4Power and Resistance

Level 5Circuit Analysis

Level 6Comparing Power

Level 7Analyzing Voltage

Digital Circuits

Course description

Topics covered

Prerequisites and next steps

Circuits

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Level 3Voltage

Level 4Power and Resistance

Level 5Circuit Analysis

Level 6Comparing Power

Level 7Analyzing Voltage

Digital Circuits

Course description

Topics covered

Prerequisites and next steps

Level 2Current