Ohm's law states that the current through a conductor is proportional to the voltage across it: V = I × R.

How does a voltage divider work?

A voltage divider uses two resistors in series to reduce an input voltage: Vout = Vin × R2/(R1+R2).

Ohm's Law & Voltage Divider

V, I, R, P · Visual wheel · Load support · Standard values — real‑time, private.

Voltage (V)

Current (I)

Resistance (R)

Power (P)

V = I × R · P = V × I

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Input Voltage (Vin)

Resistor R1

Resistor R2

Load Resistor (RL)

Output Voltage (Vout)

Vout (with load)

Current

Vout = Vin × R2 / (R1 + R2)

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⚡ Ohm's Law?
V = I × R. Enter any two values to get the third.

📊 Voltage Divider?
Vout = Vin × R2/(R1+R2). Supports load resistor.

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