The magnetic induction at distance of 0.1 m from a strong magnetic pole of strength 1200 A.m is

12x10

^{- 3}

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12x10

^{- 4}

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1.2x10

^{- 3}

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24x10

^{- 3}

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Solution

The correct option is A 12x10 $^{- 3}$ T
$B = \frac{μ_{0} m}{4 π d^{2}}$
$= \frac{4 π \times 10^{- 7} \times 1200}{4 π \times (0.1)^{2}}$
$= 12 \times 10^{- 3} T$

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The magnetic induction at distance of 0.1 m from a strong magnetic pole of strength 1200 A.m is

The correct option is A 12x10−3 TB=μ0m4πd2=4π×10−7×12004π×(0.1)2=12×10−3T

The correct option is A 12x10 $^{- 3}$ T
$B = \frac{μ_{0} m}{4 π d^{2}}$
$= \frac{4 π \times 10^{- 7} \times 1200}{4 π \times (0.1)^{2}}$
$= 12 \times 10^{- 3} T$