brief explanation of Ohm's law
How can I calculate ideal values of current for both short and open circuits by using Ohm’s law. Further more usually said that it is not advisable to connect DC batteries of different voltages in...
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Pull-down resistor ; why is it crucial
These 3 diagrams represent 3 test cases. Dia 1: When I perform an analogRead of analog port 0, then I get a high value obviously. According to the manual, the analogRead method obtains the resistance....
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How do I calculate voltage on a multi-powered DC circuit where all ends go to...
I’m writing software that will calculate the correct voltage on each component, given the state that the DC system is currently in (ex. what power sources are on, what relays are open, fuses popped,...
View ArticleIf adding resistors in parallel decreases total resistance, why doesn't the...
I’m sure I’m missing something basic, but here we go: If adding resistors in parallel decreases total resistance, why doesn’t the voltage in the circuit change? Does the current increase to match the...
View ArticleBasic circuit analysis question [duplicate]
This question already has an answer here: Was Benjamin Franklin wrong (about conventional current)? 2 answers
View ArticleHow does a 'voltage drop' work?
It is my understanding that, in an electric circuit, voltage is divided amongst components in a ratio determined by their various resistances. That is, for example, if a 5Ω and a10Ω resistor were...
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Calculated resistance of an LED
I am working on some circuit lab homework this week and am a bit stumped by something I just can’t seem to find anywhere in my Circuit Analysis I book. The lab has me construct the following circuit on...
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why my power calculation for this resistor is wrong?
i encountered a very simple question in a test and i easily calculated the answer but somehow i am making a mistake because i can not find my answer between the available answers, what am i doing wrong...
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Basic Circuit Analysis using Kirchhoff and Ohm's Laws
So I’m in an introductory circuit analysis class where all we have learned so far are Kirchhoff’s and Ohm’s Law. I am practicing how to solve these circuits, but for some reason I can’t understand this...
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Power consumed by an LED in a simple circuit
I am in the very beginnings of studying circuits and am a little confused on calculated Power. If I have a 9V Battery, 4 x 10k Resistors and a single LED, how would I calculate the power consumed by...
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