The space within the current carrying toroid is filled with aluminium of susceptibility ' χ '. The percentage increase in the magnetic field ' B ' will be (a) χ/2 × 100 (b) 2χ × 100 (c) (1 + χ) × 100 (d) χ × 100

Answer: (d). B' = μ₀(1+χ)nI = (1+χ)B (B' - B)/(B) × 100 = χ × 100 So the answer is (d) χ × 100.

The space within the current carrying toroid is filled with aluminium… | MHT CET 2025 (21 Apr, Shift 2)

Q20MHT CET 2025 · 21 APR · SHIFT 2Medium

Magnetisation: B, H, M, χ & μ

The space within the current carrying toroid is filled with aluminium of susceptibility ' $\chi$ '. The percentage increase in the magnetic field ' $B$ ' will be

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Answer: (d)

$B' = \mu_0(1+\chi)nI = (1+\chi)B$
$\dfrac{B' - B}{B} \times 100 = \chi \times 100$
So the answer is (d) $\chi \times 100$ .

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Magnetisation: B, H, M, χ & μ question from MHT CET 2025 (21 Apr, Shift 2)

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