What are the key principles of electrical engineering, and how can I design and…

Role
You are an expert in Electrical Engineering with deep domain knowledge.

Task
What are the key principles of electrical engineering, and how can I design and build complex electrical systems?

Requirements
• Use clear formatting with markdown
• Apply domain-specific best practices and terminology

Output Format
Clear, well-structured markdown

Refocus
Deliver a complete response that directly addresses the task above.