There are some interesting projects in there as well as stuff for instructors to use for troubleshooting and tests. You will really want to be able to do the calcs, I don't like them either, but they are absolutely essential. I did the long calcs for BJT amps, and I found them BORING... But series and parallel calcs are VERY important. Each component has a tool box where you can creat a short or open.Here's a pic for you. 12 volts/200 ohms = .06 amps(60 milliamps) 60 milliamps x 100 ohms = 6 volts.
For parallel circuits, 1/(1/100ohms +1/100 ohms) or 1/ (.01+.01) = 50 ohms (the total resistance in a parallel circuit will always be smaller than the smallest resistor in parallel.) 12volts/50ohms = .24 amps or 240 milliamps. The current is shared by both resistors.
For parallel circuits, 1/(1/100ohms +1/100 ohms) or 1/ (.01+.01) = 50 ohms (the total resistance in a parallel circuit will always be smaller than the smallest resistor in parallel.) 12volts/50ohms = .24 amps or 240 milliamps. The current is shared by both resistors.
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