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voltage drops









        Resistors




        To illustrate the theory about                          Each electrical consumer can

        voltage and resistance, we will                         be replaced by its resistor, and
        start with a simple electrical cir-                     is represented by the following

        cuit, namely a battery (12 V) and                       symbol:

        a 10 W light bulb.                                                             R




                                               10W              We can now replace the draw-
                                                                ing on the left with the following

                                                                symbols:




                                                                                        R
     12V                                                          +




                                                             U        12V



                                                                  -
        Each electrical circuit can be

        traced back to a basic scheme
        represented by symbols. A pow-                          How many electrical consum-

        er source (a battery or power                           ers are there in the circuit of the

        supply) is represented by the                           light bulb? I did the test with

        symbol U (or V).                                        several car enthusiasts, the an-
                                                                swer was always: "1 consumer of

                               U                                course, the light bulb".


                                                                Well, that's not quite correct.








                            Paruzzi Magazine 23                                                                 5



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