A solenoid has a core made of material with relative permeability 400 . The magnetic field produced

Question

A solenoid has a core made of material with relative permeability 400 . The magnetic field produced in the interior of solenoid is 1.0 T . The magnetic intensity is SI units is $\alpha 	imes 10^{5}$. The value of $\alpha$ is $\_\_\_\_$ . (Free space permeability $\mu_{0} = 4\pi 	imes 10^{- 7}$ SI units).

Accepted Answer

Sol. [Key Concept: $H = \frac{B}{\mu_{0}\mu_{r}} = \frac{1}{400 	imes 4\pi 	imes 10^{- 7}} = \frac{1}{16\pi} 	imes 10^{5}$.]$${H = \frac{B}{\mu} = \frac{B}{\mu_{0}\mu_{r}} = \frac{1}{400 	imes 4\pi 	imes 10^{- 7}} }{H = \frac{1}{16\pi} 	imes 10^{5} }$$

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