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The electric field ("in NC"^(-1)) in an ...

The electric field `("in NC"^(-1))` in an electromagnetic wave is given `by E=50 sin omega (t-x//c)`. The energy stored in a cylinder of cross-section 10cm and length 100cm along the x-axis will be

A

`5.5 xx 10^(-12)J`

B

`1.1 xx 10^(-11)J`

C

`2.2 xx 10^(-11)J`

D

`1.65 xx 10^(-11)J`

Text Solution

Verified by Experts

The correct Answer is:
B
Energy contained in a cylinder
U=average energy density `xx` volume `=1/2 epsi_(0) E_(0)^2 xx Al=1.1 xx 10^(-11)J`
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