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Magnetism question

2017 · Shift 2 · Q45
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Magnetism question

2017 · Shift 2 · Q45

JEE AdvancedPhysicsMagnetismMCQ+3 / −0.75
A symmetric star shaped conducting wire loop is carrying a steady state current I{\rm I}I as shown in the figure. The distance between the diametrically opposite vertices of the star is 4a.4a.4a. The magnitude of the magnetic field at the center of the loop is JEE Advanced 2017 Paper 2 Offline Physics - Magnetism Question 41 English
  1. A
    μ014πa6[3−1]{{{\mu _0}1} \over {4\pi a}}6\left[ {\sqrt 3 - 1} \right]4πaμ0​1​6[3​−1]
  2. B
    μ014πa6[3+1]{{{\mu _0}1} \over {4\pi a}}6\left[ {\sqrt 3 + 1} \right]4πaμ0​1​6[3​+1]
  3. C
    μ014πa3[3−1]{{{\mu _0}1} \over {4\pi a}}3\left[ {\sqrt 3 - 1} \right]4πaμ0​1​3[3​−1]
  4. D
    μ014πa3[2−3]{{{\mu _0}1} \over {4\pi a}}3\left[ {2 - \sqrt 3 } \right]4πaμ0​1​3[2−3​]
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