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The energy density at a point in vacuum ...

The energy density at a point in vacuum is `1.77xx10^(-7)J//m^(3)`. The intensity of the electric field at the point is

A

`100 V//m`

B

`200 V//m`

C

`300 V//m`

D

`400 V//m`

Text Solution

Verified by Experts

The correct Answer is:
B
`u=1/2epsi_(0)kE^(2)`
`therefore" "E=sqrt((2u)/(epsi_(0)k))=sqrt((2xx1.77xx10^(-7))/(8.85xx10^(-12)xx1))`
`therefore" "E=200V//m.`
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