Dear,
Your review lesson 01 is very well presented. We can learn the weak points of our students. Especially the component contacts of the circuit board will be known.

You have explained the symbols and names of different types of capacitors nicely.

Wrote details about AC and DC voltage.

There are two types of frequencies used in the world. 50 Hz is used in our country. A number of key points have been highlighted for students (frequency).

I think your lesson 01 review part needs to mention every student. Good luck to you.