4.3.1 circuits

• Natuurkunde / Scheikunde
• Middelbare school
• havo, vwo
• Leerjaar 2

4.3.1 circuits

drawing circuits

drawing circuits

Serie                        Parallel

Symbols

mixed circuit

both series and parallel

Electrical power

Power=​time​​Energy​​

P=​t​​E​​

New physical quantity:

Power

Unit of power:

• Watt (W) (Joule/second)
  
• Kilowatt (KW) (kilojoules/second)

Formula

• P: power (Watt) (W)
  
• E: energy (Joule) (J)
  
• t: time (seconds) (s)
  

The amount of energy something generates or uses per unit of time.

Example: An LED light has a power

of 9 watts (It uses 9 joules per second).

Please try the following exercises

C4.2: 4 to 8

C4.3: 4 to 7

series and parallel