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Potential Divider

Output voltage from a potential divider

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potential voltage divider

The output voltage from a potential divider can be calculated as

Vout = Vin R2 / (R1 + R2)          (1)

where

Vout = output voltage (V)

R = resistance (Ohms, Ω)

Vin = input voltage (V)

Example - Potential Divider

The output voltage from a potential divider with two resistors R1 = 10 Ohms and R2 = 20 Ohms, and input voltage 12 V can be calculated as

     Vout = (12 V) (20 Ω) / ((10 Ω) + (20 Ω))

        = 8 (V)

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