The space inside a toroid is filled with tungsten whose susceptibility is `6.8xx10^(-5)` . The percentage increase in the magnetic field will be

Question

The space inside a toroid is filled with tungsten whose susceptibility is `6.8xx10^(-5)` . The percentage increase in the magnetic field will be

The space inside a toroid is filled with tungsten whose susceptibility is `6.8xx10^(-5)` . The percentage increase in the magnetic field will be
A. `0.0068%`
B. `0.068%`
C. `0.68%`
D. None of these

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
When space inside the toroid is filled with air ,`B_(0)=mu_(0)H`. When filled wiith tungsten , we get `B=muH=mu_(0)mu_(r)H=mu_(0)(1+ chi_(m))H`
Percentage increase in magnetic field
` =((B-B_(0)) xx 100)/( B_(0))=(mu_(0) chi_(m)H xx 100)/( mu_(0)H)=chi_(m) xx 100 `
`=6.8xx10^(-5) xx 100=0.0068%`

4 views Answered 2023-02-05 15:29