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Moving Charges and Magnetism — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
MCQ
Two long straight wires are kept parallel, distance between them is 2R and current is flowing in opposite directions in two wires. The magnitude of magnetic field at a point midway between them which is at a distance R from each wire is:
  • A
    zero
  • B
    $\frac{\mu_0 I }{4 \pi R }$
  • C
    $\frac{\mu_0 I}{2 \pi R}$
  • ✓
    $\frac{\mu_0 I }{\pi R }$
✓

Answer

Correct option: D.
$\frac{\mu_0 I }{\pi R }$
(d)$\frac{\mu_0 I }{\pi R }$

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