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Magnetic Effects & Magnetism

JEE Main level, single correct, medium

71 of 276

Question 71 of 276

A solenoid of $1000$ turns per metre has a core with relative permeability $500.$ Insulated windings of the solenoid carry an electric current of $5A.$ The magnetic flux density produced by the solenoid is:
(Permeability of free space $=4\pi \times {10}^{-7}H{m}^{-1}$ )

Show answer and solution

Answer: (A) $\left(\pi \right)T$

B=\mu nI={\mu }_{0}{\mu }_{r}nI

B=4\pi \times {10}^{-7}\times 500\times 1000\times 5

B=\pi

Tesla

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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