A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is________________?
Correct answer: D. (n-1)G
- A. nG
- B. G/n
- C. G/(n-1)
- D. (n-1)G
Explanation
The original voltmeter has total resistance G for full-scale voltage V. To measure nV with the same current, the total resistance must become nG, so the series resistance is nG − G = (n − 1)G.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Measurement and Instrumentation
156 free Measurement and Instrumentation MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Measurement and Instrumentation questions
A CRO is used to measure _________________?
An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is______________?
Which of the following properties a damping oil must possess ?
Which of the following is likely to have the largest resistance ?
The resistance of an ideal voltmeter is ______________?
If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is ________________?