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Magnetics question

2018 · 15 Apr · Shift 1 · Q58
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Magnetics question

2018 · 15 Apr · Shift 1 · Q58

JEE MainPhysicsMagneticsMCQ+4 / −1
A Helmholtz coil has a pair of loops, each with NNN turns and radius RRR. They are placed coaxially at distance RRR and the same current I{\rm I}I flows through the loops in the same direction. P,P,P, midway between the centers AAA and CCC, is given by [Refer to figure given below] : JEE Main 2018 (Online) 15th April Morning Slot Physics - Magnetic Effect of Current Question 186 English
  1. A
    8Nμ0I51/2R{{8N{\mu _0}{\rm I}} \over {{5^{1/2}}R}}51/2R8Nμ0​I​
  2. B
    8Nμ0I53/2R{{8N{\mu _0}{\rm I}} \over {{5^{3/2}}R}}53/2R8Nμ0​I​
  3. C
    4Nμ0I51/2R{{4N{\mu _0}{\rm I}} \over {{5^{1/2}}R}}51/2R4Nμ0​I​
  4. D
    4Nμ0I53/2R{{4N{\mu _0}{\rm I}} \over {{5^{3/2}}R}}53/2R4Nμ0​I​
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