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The percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium (ma…

Q1

The percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium (magnetic susceptibility \({\chi }_{\mathrm{mg}}=1.2\times {10}^{-5}\) ) is :

[JEE Main 2025, 7 Apr (Shift 1)]

a

\(\frac{6}{5}\times {10}^{-3}%\)

b

\(\frac{5}{6}\times {10}^{-5}%\)

c

\(\frac{5}{6}\times {10}^{-4}%\)

d

\(\frac{5}{3}\times {10}^{-5}%\)

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