Hi! I'm very new to All About Circuits but I look here often for help in understanding concepts in electronics. I'm working on the last portion of the one problem I have not been able to figure out and I am hoping that you will be gracious enough to help me out. Yes, I read the rules, however, since I have been working on this for several hours I have not listed all the options that I have tried nor the 20 videos I've watched, or the pages and chapters I've read. That being said, here we go!
This is problem 817, part C (in Grob's Electronics, 12e). The problem states: Calculate the DC voltage that would be measured across R2 using a DMM having an R1 of 1k ohms on all DC voltage ranges.
The diagram (see attachments) indicates a Total voltage of 12v; R1 = 1k ohms; and R2 = 1.5k ohms. The voltmeter is across R2.
I know that the answer is 7.2 volts but I do not know how the author came to that conclusion. I can work out all the Ohm's Law equations myself but I need a big nudge in understanding the instructions. R1 already has 1k ohms and limiting the other values to 1k ohms was a failure.
Thank you, in advance, for your willingness to help me. This new journey has been quite the challenge!
This is problem 817, part C (in Grob's Electronics, 12e). The problem states: Calculate the DC voltage that would be measured across R2 using a DMM having an R1 of 1k ohms on all DC voltage ranges.
The diagram (see attachments) indicates a Total voltage of 12v; R1 = 1k ohms; and R2 = 1.5k ohms. The voltmeter is across R2.
I know that the answer is 7.2 volts but I do not know how the author came to that conclusion. I can work out all the Ohm's Law equations myself but I need a big nudge in understanding the instructions. R1 already has 1k ohms and limiting the other values to 1k ohms was a failure.
Thank you, in advance, for your willingness to help me. This new journey has been quite the challenge!
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