STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Field due to a Current Element MCQ Question
Type: MCQ-numerical-Medium
An element of 0.05 m placed at the origin as shown in figure which carries a large current of 10 A. The magnetic field at a distance of 1 m in perpendicular direction is
A
4.5 × 10⁻⁸ T
B
5.5 × 10⁻⁸ T
C
5.0 × 10⁻⁸ T
D
7.5 × 10⁻⁸ T
Correct Answer
Option C
Detailed Explanation
Using the formula dB = (μ₀/4π) * (Id sinθ / r²), with d = 0.05 m, I = 10 A, r = 1 m, and sinθ = 1, the magnetic field is calculated as 5.0 × 10⁻⁸ T.
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