electrical

Voltage Divider

Vout from R1/R2, or solve for R2 from desired Vout — power dissipation, E24 nearest standard value.

Mode

Inputs

Input Voltage Vin

Results

Vout = Vin·R2/(R1+R2)—

Current I = Vin/(R1+R2)—

Power in R1 I²·R1—

Power in R2 I²·R2—

Total Power Vin·I—

Vout = Vin·R2/(R1+R2) · I = Vin/(R1+R2) · P = I²R