Page 10 - paruzzi-magazine-en-23

#67 Electrical voltage drops

Our 10 W bulb has a filament In this case, the bulb will no lon-

resistance of 13.8 Ω. If we look at ger receive the full 12 volts, be-
the drawing on page 6, we see cause other resistors (read elec-

a series of series-connected re- trical consumers) will take a part

sistors, eleven in total (without of the voltage, according to the
counting the battery and the principle of the voltage divider.

bulb). As an exercise, let's assign

a value of 0.1 Ω to each of those
resistors (total is then 1.1 Ω), we

assume for a moment that all

couplings are oxidized, do not

connect properly anymore or are
damaged (or all three together).

We show the replacement circuit

below.

1,1 Ω

13,8 Ω

12V

10 Paruzzi Magazine 23