Can you please explain with and example how to calculate a combination of serries and parallel circuit.how to find some missing resistant, voltage of a resistant ,current and total power.

To make it easy

C is conductance, 1/R
Put all parallel resistances together into one of resistance Req
where Req = 1/ Ceq
that way Ceq = C1 + C2 ...+ Cn
where Cn = 1/Rn
so for three resistors in parallel
C1 = 1/R1, C2 = 1/R2 , C3 = 1/R3
Ceq = C1 + C2 + C3
and then
Req = 1/Ceq
I find that easier to understand than doing
R1 R2/ (R1+R2)
when you have a bunch in parallel
then just add up the ones in series including any Req s
In the end for every resistance i = V/R
in series voltages add
in parallel currents add

Did you know?

Did you know that you can easily calculate a combination of series and parallel circuits by following a few simple steps? Let's say you have a circuit with resistors connected both in series and parallel. To find the total resistance, you can add the resistance values for resistors connected in series. For resistors in parallel, you can use the reciprocal of the sum of the reciprocals of their resistance values. To find the voltage across a resistor, you can use Ohm's law, which states that voltage equals current multiplied by resistance. Similarly, to find the current flowing through a resistor, you can divide the voltage across it by its resistance. Lastly, to find the total power consumed by the circuit, you can use the formula P = IV, where P represents power, I represents current, and V represents voltage. By using these calculations, you can solve problems involving missing resistances, voltages, currents, and total power in combination circuits.