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प्रश्न
A voltmeter can measure upto 25 V and its resistance is 1000 `Omega`. How much resistance should be connected in series so that it can measure voltage upto 250 volt?
पर्याय
90`Omega`
900`Omega`
9000`Omega`
90000`Omega`
MCQ
उत्तर
9000`Omega`
Explanation:
We have to increase the range by 10 times i.e., n = 10
`therefore "R" = ("n" - 1)`
`"G" = 9 xx 1000`
` = 9000Omega`
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