STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Field of a Coil MCQ Question
Type: MCQ-numerical-Medium
A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 × 10⁻⁴ T at its centre. The current flowing through it is
A
1.06 A
B
2.44 A
C
3.44 A
D
4.44 A
Correct Answer
Option A
Detailed Explanation
Using the formula B = (μ₀NI)/(2R), we can solve for I. Substituting the given values, we find I = 1.06 A.
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