A solenoid with a magnetic core has a magnetic induction of $1.6\pi$ T inside it when subjected to a magnetising field of $2000$ A m $^{-1}$ . The magnetic susceptibility of the core material is:
( $\mu_0 = 4\pi \times 10^{-7}$ T m A $^{-1}$ )

Question

A solenoid with a magnetic core has a magnetic induction of

1.6\pi

T inside it when subjected to a magnetising field of

2000

A m

^{-1}

. The magnetic susceptibility of the core material is:
(

\mu_0 = 4\pi \times 10^{-7}

T m A

^{-1}

)

Quantrex Academy · Accepted Answer

Correct answer: B. 1999

Absolute permeability is given by μ = (B)/(H) . μ = (1.6π)/(2000) = 8π × 10^ -4 T m A ^ -1 Relative permeability is μ_r = (μ)/(μ_0) . μ_r = 8π × 10^ -4 4π × 10^ -7 = 2000 Magnetic susceptibility is _m = μ_r - 1 . _m = 2000 - 1 = 1999 Answer: 1999

A solenoid with a magnetic core has a magnetic induction of 1.6π T...

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