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Physics · JEE | Moving Charges and Magnetism
हिन्दीA long solenoid has \( 500 \) turns per meter and carries a current of \( 2 \text{ A} \). The magnetic field inside the solenoid near its center is:
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Correct answer · Option C
\( 1.26 \times 10^{-3} \text{ T} \)
Explanation
Solenoid magnetic field \( B = \mu_0 n I = (4\pi \times 10^{-7})(500)(2) = 2000\pi \times 10^{-7} \approx 1.26 \times 10^{-3} \text{ T} \).
