Lesson 10

Section 3 — Electricity in the home
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Section 3 — Electricity in the home

Slide 1 - Diapositive

Section 3 — Electricity in the home
This lesson
  • Recap
  • Power calculations
  • Checking the homework

Slide 2 - Diapositive

Recap

Slide 3 - Diapositive

Slide 4 - Diapositive

Kilowatt hour
E=Pt
E=1kW1h
E=1kWh

Slide 5 - Diapositive

Kilowatt hour
E=Pt
E=1kW1h
E=1kWh
E=Pt
E=1000W3600s
E=3.6106J=3.6MJ

Slide 6 - Diapositive

Exercise
(In kWh)
E=Pt

Slide 7 - Diapositive

Exercise
(In kWh)

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Power calculations

Slide 11 - Diapositive

P=UI

Slide 12 - Diapositive

P=UI
SJ=CJSC

Slide 13 - Diapositive

P=UI
SJ=CJSC

Slide 14 - Diapositive

Calculating the total power of a group?
Ptot=P1+P2+P3+...

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Calculating the total power of a group?
Ptot=P1+P2+P3+...
Ptot=UtotItot

Slide 16 - Diapositive

Calculating the total power of a group?
Ptot=UtotItot

Slide 17 - Diapositive

Calculating the total power of a group?
Ptot=UtotItot
Utot=U1=U2=U3=...

Slide 18 - Diapositive

Calculating the total power of a group?
Ptot=UtotItot
Utot=U1=U2=U3=...
Itot=I1+I2+I3+...

Slide 19 - Diapositive

Calculating the total power of a group?
Ptot=UtotItot
Utot=U1=U2=U3=...
Itot=I1+I2+I3+...
Ptot=Utot(I1+I2+I3+...)

Slide 20 - Diapositive

Calculating the total power of a group?
Ptot=UtotItot
Utot=U1=U2=U3=...
Itot=I1+I2+I3+...
Ptot=Utot(I1+I2+I3+...)

Slide 21 - Diapositive

Checking the homework

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Slide 26 - Diapositive

Homework
  • Section 4 –exercise 1, 2, 3, 4 and 5 
  • Section 2 exercise 9

Slide 27 - Diapositive