A) 298
B) 1192
C) 596
D) 1788
Correct Answer: C
Solution :
\[\phi =BA\Rightarrow B=\frac{\phi }{A}\] \[B=\mu H\Rightarrow \mu =\frac{B}{H}=\frac{\phi /A}{H}\] \[\mu ={{\mu }_{0}}{{\mu }_{r}}=\frac{\phi }{AH}\] Relative permeability: \[{{\mu }_{r}}=\frac{\phi }{AH{{\mu }_{0}}}\] ?..(1) Magnetic susceptibility \[{{\chi }_{m}}={{\mu }_{r}}-1\] \[{{\chi }_{m}}=\left( \frac{\phi }{AH{{\mu }_{0}}} \right)-1\] [from (1)]
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