To convert $1.5 \times 10^5$ N/C to MN/C (meganewtons per coulomb):

1 MN (meganewton) = $10^6$ N.

So, divide by $10^6$:

$\frac{1.5 \times 10^5 \text{ N/C}}{10^6} = 0.15 \text{ MN/C}.$

Thus, $1.5 \times 10^5$ N/C is equal to 0.15 MN/C.

Would you like more details or have any questions?

Here are some related questions to further explore the topic:

1. What is the electric field strength in other units like kN/C?
2. How do you convert between different units of force per charge?
3. What is the significance of N/C in the context of electric fields?
4. Can you calculate the electric field generated by a point charge?
5. How does the electric field change with distance from a charge?

Tip: Always check your unit conversions carefully by ensuring you understand the base unit relationships!