Introduction:
When revising for electrical engineering, it is important to choose the right resources for effective learning. Online lecture notes and textbook summaries are two commonly used resources for revision. In order to decide which one to refer to, it is important to consider their advantages and disadvantages.

Online Lecture Notes:
Online lecture notes can be a valuable resource for revision in electrical engineering. Here are some reasons why they can be beneficial:

1. Concise and Comprehensive: Online lecture notes often provide concise and comprehensive summaries of the topics covered in class. They are usually organized in a structured manner, making it easier for students to grasp and review important concepts.

2. Accessible Anytime, Anywhere: Online lecture notes can be accessed anytime and anywhere as long as there is an internet connection. This flexibility allows students to revise at their own pace and convenience.

3. Additional Resources: Lecture notes often include supplementary materials such as diagrams, graphs, and examples that can enhance understanding and provide additional explanations beyond what is covered in textbooks.

Textbook Summaries:
Textbook summaries are another valuable resource for revision in electrical engineering. Here are some reasons why they can be beneficial:

1. In-Depth Coverage: Textbooks provide detailed explanations and in-depth coverage of topics. They often include theoretical concepts along with practical applications, which can help students develop a deeper understanding of the subject.

2. Reference for Problem Solving: Textbooks usually contain a wide variety of practice problems and solutions. These exercises can be helpful in developing problem-solving skills and applying theoretical knowledge to real-life scenarios.

3. Credibility and Reliability: Textbooks are generally written by experts in the field and go through rigorous editorial processes. They are considered reliable sources of information and can be trusted for accurate and up-to-date content.

Conclusion:
Both online lecture notes and textbook summaries have their own advantages and can be valuable resources for revision in electrical engineering. It is recommended to use a combination of both resources to benefit from their strengths. Online lecture notes provide concise summaries and additional resources, while textbooks offer in-depth coverage and problem-solving practice. Ultimately, the choice depends on personal learning preferences and the specific topics being revised.