Introduction:
When it comes to revising electrical engineering concepts, it is essential to choose the right resources that will enhance understanding and retention. In this regard, both online video lectures and offline classroom notes have their advantages and drawbacks. This response will provide a detailed analysis of each option to help you make an informed decision.

Online Video Lectures:
- Online video lectures offer several benefits for electrical engineering revision:
1. Visual and audio learning: Video lectures provide a dynamic and engaging learning experience. They combine visual aids, diagrams, and animations with spoken explanations, making it easier to comprehend complex electrical engineering concepts.
2. Flexibility and accessibility: Online video lectures can be accessed anytime and anywhere, allowing for flexible learning. This is particularly beneficial for individuals with busy schedules or those who prefer self-paced learning.
3. Wide range of topics: Online platforms often provide a vast array of video lectures on different electrical engineering topics. This allows you to explore various subjects and revise specific areas of weakness.
4. Expert instruction: Video lectures are often conducted by experienced professors or industry experts, ensuring high-quality instruction and accurate information.

Offline Classroom Notes:
- Offline classroom notes also offer several advantages for electrical engineering revision:
1. Personalized learning: Classroom notes are usually tailored to the specific course or curriculum, providing a comprehensive overview of the essential topics. These notes are designed to complement the instructor's teaching style and may include additional explanations or examples.
2. Interactive learning: In a classroom setting, students have the opportunity to ask questions, participate in discussions, and engage with the instructor and peers. This interactive environment fosters a deeper understanding of the subject matter.
3. Concentration and focus: Offline classroom notes eliminate distractions that may be present when studying online, such as notifications or unrelated content. By studying offline, you can create a dedicated learning environment conducive to concentration and focus.

Conclusion:
Both online video lectures and offline classroom notes have their advantages for electrical engineering revision. Online video lectures provide visual and audio learning, flexibility, accessibility, and expert instruction. On the other hand, offline classroom notes offer personalized learning, interactive sessions, and enhanced concentration. To optimize your revision process, consider utilizing a combination of both resources. Start with online video lectures to gain a conceptual understanding, and then supplement your learning with offline classroom notes for a more in-depth comprehension. Remember to choose resources from reliable platforms such as EduRev, which offers a wide range of educational content.