a) For a conductor, number of collisions per second is  and plasma frequency is  

Calculate the skin depth for the signal frequency of (i) 50  and (ii) 50 MHz. 

To calculate the skin depth for the given signal frequencies of 50 Hz and 50 MHz in a conductor with a collision frequency of \(10^{12}\) collisions per second and a plasma frequency of \(\omega_P = 2\pi \times 10^{15}\), we'll use the formula for skin depth (\(\delta\)):

\[
\delta = \sqrt{\frac{2}{{\omega \mu_0 \mu_r \sigma}}}
\]

Where:
- \(\omega\) is the angular frequency (\(2\pi f\))
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