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Ohm's Law

A single resistor across a 9 V battery — the cleanest demonstration of V = I × R.

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ohms-law.circuit dc analysis
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How it works

Ohm's Law says the current through a resistor equals the voltage across it divided by its resistance: I = V / R. This loop puts 9 volts across a single 470 Ω resistor.

Run the DC analysis and the solver reports the node voltage and the branch current directly. Change the resistance in the properties panel and watch the current scale inversely — halve R and the current doubles.