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Magnetics question

2006 · Shift 0 · Q91
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Magnetics question

2006 · Shift 0 · Q91

JEE MainPhysicsMagneticsMCQ+4 / −1
A long solenoid has 200200200 turns per cmcmcm and carries a current i.i.i. The magnetic field at its center is 6.28×10−2   Weber/m2.6.28 \times {10^{ - 2}}\,\,\,Weber/{m^2}.6.28×10−2Weber/m2. Another long solenoid has 100100100 turns per cmcmcm and it carries a current i3{i \over 3}3i​. The value of the magnetic field at its center is
  1. A
    1.05×10−2  Weber/m21.05 \times {10^{ - 2}}\,\,Weber/{m^2}1.05×10−2Weber/m2
  2. B
    1.05×10−5  Weber/m21.05 \times {10^{ - 5}}\,\,Weber/{m^2}1.05×10−5Weber/m2
  3. C
    1.05×10−3  Weber/m21.05 \times {10^{ - 3}}\,\,Weber/{m^2}1.05×10−3Weber/m2
  4. D
    1.05×10−4  Weber/m21.05 \times {10^{ - 4}}\,\,Weber/{m^2}1.05×10−4Weber/m2
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