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Moving Charges and Magnetism question

2012 · Q132
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Moving Charges and Magnetism question

2012 · Q132

NEETPhysicsMoving Charges and MagnetismMCQ+4 / −1
A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampare range. The value (in ohm) of neccessary shunt will be
  1. A
    0.001
  2. B
    0.01
  3. C
    1
  4. D
    0.05
View written solutionFree

Correct answer: A

S=Vg(I−Ig)S = {{{V_g}} \over {\left( {I - {I_g}} \right)}}S=(I−Ig​)Vg​​

Neglecting Ig

∴\therefore∴ S=VgI=25×10−3V25 A=0.001ΩS = {{{V_g}} \over I} = {{25 \times {{10}^{ - 3}}V} \over {25\,A}} = 0.001\Omega S=IVg​​=25A25×10−3V​=0.001Ω

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