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A magnetising field of 1600 Am^(-1) prod...

A magnetising field of 1600 `Am^(-1)` produces a magnetic flux of `2.4xx10^(-5)` Wb in an iron bar of cross - section area 0.2 `cm^(2)` . The succeptibility of bar is ________

A

596

B

1192

C

298

D

1788

Text Solution

Verified by Experts

The correct Answer is:
A
Magnetic induction `B = (2.4xx10^(-5))/(0.2xx10^(-4)) = 1.2 wb//m^(2)`
Magnetic permeability `mu = (B)/(H) = (1.2)/(1600)`
`=7.5 xx 10^(-4)N//A^(2)`
`:.` Suceeptibility `K = (mu)/(mu_(0))-1`
`= (7.5xx10^(-4))/(4pixx10^(-7))-1 = 596 `
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