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QAIPM-2012-Ph-1770: NEET 2012 Physics - Class 12 AIPM-2012-Ph-1770 Solution: A milli voltmeter of 25 milli volt range is to be converted…
A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampere range. The value (in ohm) of necessary shunt will be 0.001 0.01 1 0.05
Multiple Choice Options
- A 5 7 _
- B 20 27 _
- C 5 27 _
- D 7 20 _
Step-by-Step Verified Solution
In first case,
n 1 = 3 and n 2 = 4
1 _ 1 = R ( 1 3 2 _ 1 4 2 ) = 7 R 144
In second case,
n 1 = 2 and n 2 = 3
1 _ 2 = R ( 1 2 2 _ 1 3 2 ) = 5 R 36
_ _ 1 _ 2 = 5 36 _ 144 7 = 20 7