Voltage divider is just two resistor connected is series, but powerful tool
for calculating electrical potential of some nodes. Instead of solving sys
tem of equations, all we need to do in order to calculate output voltage of
an voltage divider is to find quotient of resistor value and sum of two re
sistors that makes voltage divider, and then to find product of this quotie
nt and input voltage.

Read more:

http://www.cirvirlab.com/index.php/electric/voltage-divider-formula.html

and also calculate:

http://www.cirvirlab.com/index.php/calculators/voltage-divider-calculator.h tml

Read more:

http://www.cirvirlab.com/index.php/electric/voltage-divider-formula.html

and also calculate:

http://www.cirvirlab.com/index.php/calculators/voltage-divider-calculator.h tml