Lesson 8

• Physics
• Middelbare school
• havo, vwo
• Leerjaar 3

Section 3 — Electricity in the home

Section 3 — Electricity in the home

This lesson

• Intro to section 3
• Discussing the homework
• Circuit groups
• Time to work on exercises

Learning objectives section 3

Fusebox

What type of circuit is used for a group in a fusebox?

What type of circuit is used for in group in a fusebox?

What type of circuit is used for in group in a fusebox?

Why?

Discussing the homework

Read:

• Section 3
  
• Section 4
  

Do:

• Section 3 exercise 1, 2 and 3
  
• Section 4 exercise 1 and 2
  
• The practice exercise attached below
  

Practice exercise

1) A primary coil on a transformer has a voltage of 240V and 500 turns.  What is the voltage over the secondary coil if the secondary coil has 25 turns?

2) 3. A secondary transformer has a current of 25A and a voltage of 5V. On the primary transformer the current is 15A. Find the primary voltage.

Link

Power

P=U⋅I

Ptot=P1+P2+P3+...

P​t​​=U⋅(I​1​​+I​2​​+I​3​​+...)

Homework

Do: section 3 exercise 4 and 5