UniCalc
RU
full version
Own formula
Calculation
Catalog
About
Help
Find a formula
Direct-current circuits
Electric circuit
voltage on clamps of source
U
c
l
=
V
x
nV
μV
mV
V
kV
MV
EMF of source
U
src
=
V
x
nV
μV
mV
V
kV
MV
resistance of external circuit
R
ext
=
Ω
x
μΩ
mΩ
Ω
kΩ
MΩ
GΩ
TΩ
internal resistance of voltage source
R
int
=
Ω
x
μΩ
mΩ
Ω
kΩ
MΩ
GΩ
TΩ
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
