2. Solved Papers
  3. NEET

NEET AIPMT SOLVED PAPER SCREENING 2012

  • question_answer
    A millivoltmeter of 25 mV range is to be converted into an ammeter of 25 A range. The value (in ohm) of necessary shunt will be

    A) 0.001                    

    B)        0.01                       

    C)        1                             

    D)        0.05

    Correct Answer: A

    Solution :

    The full scale deflection current \[{{i}_{g}}=\frac{25\,mV}{G}\text{ampere}\] where G is the resistance of the meter. The value of shunt required for converting it into ammeter of range 25 A is \[S=\frac{{{i}_{g}}G}{i-{{i}_{g}}}\] So that,\[S\approx \frac{25\,mV}{25}=0.001\,\Omega \]


You need to login to perform this action.
You will be redirected in 3 sec spinner