You are required the basic knowledge of electricity when you use FA equipment.
This chapter describes the basics of electricity.
This chapter is easy to understand even for those who do not have knowledge of electricity, so let's learn about electricity.

• 1.1 The nature of electricity
• 1.2 What is current?
• 1.3 The relationship between current, voltage, and resistance
• 1.4 The differences between series and parallel circuits
• 1.5 What is electrical energy?
• 1.6 What is electric power and electric energy?