Physics-Magnetic Properties of Materials
NEET Physics Magnetic Properties of Materials MCQ Question
Type: MCQ-numerical-Hard-Class 12
A solenoid with 1500 turns per meter has a core made of a material with a relative permeability of 300. If a current of 1.5 A flows through the solenoid, calculate the magnetic field B inside the solenoid.
A
0.84 T
B
0.72 T
C
0.56 T
D
0.63 T
Correct Answer
Option A
Detailed Explanation
The magnetic field B is calculated using B = μ_r μ_0 H, where H = nI = 1500 × 1.5. Using μ_0 = 4π × 10^-7 N/A² and μ_r = 300, we find B = 0.84 T.
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