In a electro magnetic wave the expression for electric field is given by `E=50 sin (omegat-kx)` the permeability is given `mu=4mu_(0)` & permittivity `epsi_(0)=epsi_(r)`, then find the average intensity delivered.

Options

A. 1
B. 2
C. 3
D. 4

Explanation

To solve the problem step by step, we will find the average intensity delivered by the electromagnetic wave given the electric field expression and the values of permeability and permittivity.

### Step 1: Identify the given values
- The electric field \( E \) is given by:
\[ E = 50 \sin(\omega t - kx) \]
From this expression, we can identify the amplitude of the electric field \( E_0 = 50 \, \text{V/m} \).
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