An iron bar of permeability $8.2 \times 10^{- 3} W b / A - m$ is placed in a magnetic field of strength $150$ A/m. What is induction in the iron rod?

3.23 W b / m^{2}

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1.23 W b / m^{2}

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2.23 W b / m^{2}

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4.23 W b / m^{2}

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Solution

The correct option is D $1.23 W b / m^{2}$
B. $1.23 W b / m^{2}$
The relation between the magnetic induction and magnetic field strength is,
$B = μ H$
given,
$μ = 8.2 \times 10^{- 3} W b / A - m$
$H = 150 A / m$
$B = 8.2 \times 10^{- 3} \times 150 W b / m^{2}$
$B = 1.23 W b / m^{2}$

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An iron bar of permeability 8.2×10−3Wb/A−m is placed in a magnetic field of strength 150 A/m. What is induction in the iron rod?

The correct option is D 1.23Wb/m2B. 1.23Wb/m2The relation between the magnetic induction and magnetic field strength is, B=μHgiven,μ=8.2×10−3Wb/A−mH=150A/mB=8.2×10−3×150Wb/m2B=1.23Wb/m2

An iron bar of permeability $8.2 \times 10^{- 3} W b / A - m$ is placed in a magnetic field of strength $150$ A/m. What is induction in the iron rod?

The correct option is D $1.23 W b / m^{2}$
B. $1.23 W b / m^{2}$
The relation between the magnetic induction and magnetic field strength is,
$B = μ H$
given,
$μ = 8.2 \times 10^{- 3} W b / A - m$
$H = 150 A / m$
$B = 8.2 \times 10^{- 3} \times 150 W b / m^{2}$
$B = 1.23 W b / m^{2}$