Build circuits • Adjust voltage & resistors • Read the meters • Verify Ohm's law
Battery Voltage
6.0 V
Resistor R₁
4 Ω
Resistor R₂
6 Ω
Resistor R₃
12 Ω
Watch electrons flow • bulb glows with current
Equivalent Resistance
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Total Current (I)
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Power (P = VI)
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Heat in 1 min
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🧮 Live Calculation
📊 Observation Table — Verify Ohm's Law
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Voltage (V)
Current (I)
R = V/I (Ω)
Adjust voltage and click "Record Reading" to collect data points.
Try this: Keep the resistor fixed, change the battery voltage, and record several readings.
Notice that V/I stays constant — that constant is the resistance R. This verifies Ohm's Law (V = IR).
In series, resistances add up; in parallel, the equivalent resistance is smaller than the smallest resistor.