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# Potentiometer Calculator

Potentiometer refers to an instrument for measuring an unknown voltage by comparison to a standard voltage. A three-terminal resistor with an adjustable center connection, widely used for volume control in radio and television is termed as a potentiometer. A potentiometer is also called as a variable resistor or pot.

Table of Contents:

## Formula

**V _{L}=R_{2}R_{L}/ ( ( R_{1}R_{L}+R_{2}R_{L}+R_{1}R_{2})*V_{s})**

A potentiometer is a type of variable resistor that resists electric current and adjusts electrical devices. A potentiometer is similar to a rheostat, but it is more efficient. The advanced online Potentiometer Calculator is used to calculate the divider voltage for three-terminal resistors.

**Example:**

Calculate the Potentiometer for the given details.

R1 (amps) = 25

R2 (amps) = 15

rl (amps) = 10

vs(volts) = 5

**Solution:**

**Apply Formula:**

V_{L}=R_{2}R_{L}/ ( ( R_{1}R_{L}+R_{2}R_{L}+R_{1}R_{2})*V_{s})

V_{L} = 15*10/(( 25*10+15*10+25*15)*5)

V_{L} = 150/ ((250+150+375)*5)

V_{L} = (150/775)*5

V_{L} = 0.19354 *5

**V _{L} = 0.96774**