In a circut, two resistors of 100 oham and 80 ohm are connected in parallel. The parallel group is then connected in series with a 100 ohm resistor. What is the total resistance of the circuit?
The equivalent resistance of two resistors in parallel can be found by
So for your two parallel resistors we get an equivalent resistance of
So
The equivalent resistance of two resistors in series can be found by
So we are connecting the equivalent resistance in series with a resistor:
-Dan