Calculating the voltage, current, & resistance for combinational circuits & transistors

Transistors and diodes are non linear devices that don’t have voltage to current relationships that can be calculated using ohms law

So then how do you calculate the total resistance of a circuit if there is a transistor used in the circuit? Does my question make sense

No :frowning:

In a transistor circuit the voltages and currents compute without many serial/parallel resistors.

The voltage V on R2 is either 0 or Vcc (9V?), current V/R2.
The voltage on R1 is 0 or Vcc-Vled, currents accordingly.

It does make sense but it doesn't work that way

Google art of electronics horowitz download
It's 30Meg. Learn it, live it

See post #8.

How to Solve Any Series and Parallel Circuit Problem - YouTube what do you think of this approach to solving combinational circuits?

This tutorial is for resistors in combination and is fine - but you need to understand the role of semiconductors in any circuit , which do not follow the V=IR equation , so cannot be calculated with those rules .
Have a read about diodes and look back carefully at the advice given thus far

Something on diodes

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