The correct option is B 10 ^ 4 TThe Gauss is defined by the Amp #232;re's force law when it is applied to CGS units. A wire 1 centimetre long, sitting in ...

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Standard XII

Physics

Towards Biot-Savart Law

1 gauss is eq...

Question

1 gauss is equal to

^{4}

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^{- 4}

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^{3}

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none of these

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Solution

The correct option is B 10 $^{- 4}$ T
The Gauss is defined by the Ampère's force law when it is applied to CGS units. A wire 1 centimetre long, sitting in a flux density equal to one Gauss and carrying a current of 1 abampere experiences a force equal to 1 dyne.

Thus $1 G = \frac{1 d y n e}{(1 c m * 10 A)} = \frac{10^{- 5} N}{(10^{- 2} m * 10 A)}$ $= 10^{- 4} N 4 d c A / m = 10^{- 4} T$

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