1. For a p-n junction, the electric field intensity across the depletion region is approximated by

$E = \frac{V}{d}$

where:

• $V = 0.6\,\text{V}$ is the potential barrier,
• $d = 6 \times 10^{-6}\,\text{m}$ is the depletion width.

2. Substitute the values:

$E = \frac{0.6}{6 \times 10^{-6}}$

3. Simplify:

$E = \frac{0.6}{6} \times 10^{6} = 0.1 \times 10^{6} = 1 \times 10^{5}\,\text{N/C}$

4. The question asks for the value in the form

$\underline{\hspace{1cm}} \times 10^{5}\,\text{N/C}$

So the required integer is:

$1$