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Voltage Divider Circuits
37 questions By Tony R. Kuphaldt
Page 13
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Question 37 of 37
Suppose a voltmeter has a range of 0 to 10 volts, and an internal resistance of 100 kΩ:
Show how a single resistor could be connected to this voltmeter to extend its range to 0 to 50 volts. Calculate the resistance of this “range” resistor, as well as its necessary power dissipation rating.
Reveal answerNotes:Voltmeter ranging is a very practical example of voltage divider circuitry.
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Plus signs are missing from these questions and answers, such as in question 11, where the denominator of the voltage divider equation appears as “R1 R2 R3” instead of “R1+R2+R3”. Same in the answer to question 15. Likely elsewhere as well, as Find shows no results for “+” anywhere on the page. I’m using Chrome 88.0.4324.182 on Windows 10, but same on Firefox & Edge. HTML source for the page shows it as “R1 R2 R3”, so it isn’t just a display problem.
Iam a student and i need an explain for this answers how can I get an explanation ?
Ca any one tell in detail how
The formula got formed like this !! ( ER= Et(R/Rt)) thank you