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🔌 How Does Ohm’s Law Work?

Use voltage, current, and resistance together, read the slope of a voltage-current graph, and check circuit results with power.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

Core relationshipRelate voltage, current, and resistance while recognizing when Ohm’s law applies.Use V equals I times R for an ohmic component, identify its variables, and keep the model’s limits in view.
Reading and checkingRead resistance from a graph and check electrical results with units and power.Interpret voltage-current slope, handle prefixes, and use power identities as a consistency check.

Questions this course answers

What does V=IR connect?

Those are the three electrical quantities.

Which is a power formula?

Electrical power equals voltage times current.

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