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In a uniform magnetic field of 10^(-5) ...

In a uniform magnetic field of `10^(-5)` T in free space, the energy density is `u`. The electric field which will produce the same energy density in free space is

A

`10^(5) V//m`

B

`3 xx 10^(3) V//m`

C

`10 V//m`

D

`9 xx 10^(-3) V//m`

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The correct Answer is:
B
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