What is the value of E?

The image contains handwritten notes that appear to be physics or math problems. The question asks for the value of 'E'.

From the image, the following information is presented:

• q = 18нКл
• E = 30 Н/Кл
• r = 27см
• ε - ?

Based on the clear inscription, the value of E is directly provided.

Ответ: 30 Н/Кл