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I mean in parallel to the chassis.
Here are a couple of doodles I made to better illustrate what I am trying to understand:
I don't understand how I would not be part of the circuit. If you substitute "hands & body" with a simple wire, you would expect current to flow through it, right? So...
How am I not part of the circuit??? By touching the car chassis I have connected myself in a parallel circuit, relative to the chassis, i.e the current will flow through me>chassis>battery negative and chassis>battery negative with the majority of current bypassing me, of course because of my...
But the circuit is complete - the ions flow from the + terminal of the battery, through various loads, then through me, then to the - terminal of the battery.
Your example is an open circuit, but when I am touching the chassis of a running car I would be touching a closed circuit, right?
Or...
Hi guys,
I am having a really hard time understanding chassis ground, best illustrated by the example of a car's electrical system:
The negative terminal of the car's battery is connected to the chassis to provide return path for all current of all the loads.
So basically, the chassis of the...
Oh, I see. Thanks for all the time you guys have taken explaining all this :-)
If it's no trouble, would you explain the process of how would I go about connecting four 3v LEDs (20mA) in series with 12v supply?
Exactly, at this point I need the LED's amps to figure out the resistor. I.e. for the 12v supply and the LED being 20mA, I need 600 Ohms resistor. Correct? Rated voltage of LED should concern me as far as it does not exceed the 12v, so it's not underpowered. Is this train of thought correct?
Indeed surprising, but equally so that the resistor survived, as well, considering it was just a 1/4W with 1.2W circuit (got hot as hell though) :-)
I don't think the author meant it in a same way as a capacitor, since he said that a resistor blocks a percentage, not the whole current. The more...
Re: watt calculation for series bulb
You're right,completely missed that, i though it was a trick question. :)
In series - 67W as Analog Ground said.
#2 just miscalculated the number of bulbs.
It's actually from "Make:Electronics", which I am using to do some exercises.
I really found it weird that the author will say something like that without going into detail, so I figured I missed something about transistors :)
Re: watt calculation for series bulb
I would go out on a limb and say 300W, 200W for Bulb two and 100W for Bulb One :)
Bulb one will need 0.4 amps and Bulb two 0.8 for total of 1.2 amps times 250v = 300W
Starting with Electronics, since I have always been fascinated by it, just never had the time to explore. Anyhow, I have just began and already getting into some serious issues with fundamentals, starting with resistors.
I get that a resistor will lower the amps of a circuit, and I know I can...
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