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Lesson 9
Section 3 — Electricity in the home
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Physics
Middelbare school
havo, vwo
Leerjaar 3
This lesson contains
30 slides
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text slides
.
Lesson duration is:
45 min
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Items in this lesson
Section 3 — Electricity in the home
Slide 1 - Slide
Section 3 — Electricity in the home
This lesson
Recap
Electricity in the house
Kilowatt hour
Power
Slide 2 - Slide
Recap
Slide 3 - Slide
What type of circuit is used for in group in a fusebox?
Slide 4 - Slide
What type of circuit is used for in group in a fusebox?
Slide 5 - Slide
Voltage & number of coils
U
s
U
p
=
N
s
N
p
U
p
:voltage primary coil
U
s
: Voltage secondary coil
N
p
: Number of turns primary coil
N
s
: Number of turns secondary coil
U
p
⋅
N
s
=
U
s
⋅
N
p
Slide 6 - Slide
Slide 7 - Slide
Electric socket
Potential difference (voltage)
= 230 Volt
Slide 8 - Slide
Learning objectives section 3
Slide 9 - Slide
Slide 10 - Slide
Slide 11 - Slide
Slide 12 - Slide
Kilowatt hour
E
=
P
⋅
t
E
=
1
k
W
⋅
1
h
E
=
1
k
W
h
Slide 13 - Slide
Kilowatt hour
E
=
P
⋅
t
E
=
1
k
W
⋅
1
h
E
=
1
k
W
h
E
=
P
⋅
t
E
=
1
0
0
0
W
⋅
3
6
0
0
s
E
=
3
.
6
⋅
1
0
6
J
=
3
.
6
M
J
Slide 14 - Slide
Exercise
(In kWh)
E
=
P
⋅
t
Slide 15 - Slide
Exercise
(In kWh)
Slide 16 - Slide
Calculating the total power over a group
Slide 17 - Slide
P
=
U
⋅
I
Slide 18 - Slide
P
=
U
⋅
I
S
J
=
C
J
⋅
S
C
Slide 19 - Slide
P
=
U
⋅
I
S
J
=
C
J
⋅
S
C
Slide 20 - Slide
Calculating the total power of a group?
P
t
o
t
=
P
1
+
P
2
+
P
3
+
.
.
.
Slide 21 - Slide
Calculating the total power of a group?
P
t
o
t
=
P
1
+
P
2
+
P
3
+
.
.
.
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
Slide 22 - Slide
Calculating the total power of a group?
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
Slide 23 - Slide
Calculating the total power of a group?
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
U
t
o
t
=
U
1
=
U
2
=
U
3
=
.
.
.
Slide 24 - Slide
Calculating the total power of a group?
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
U
t
o
t
=
U
1
=
U
2
=
U
3
=
.
.
.
I
t
o
t
=
I
1
+
I
2
+
I
3
+
.
.
.
Slide 25 - Slide
Calculating the total power of a group?
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
U
t
o
t
=
U
1
=
U
2
=
U
3
=
.
.
.
I
t
o
t
=
I
1
+
I
2
+
I
3
+
.
.
.
P
t
o
t
=
U
t
o
t
⋅
(
I
1
+
I
2
+
I
3
+
.
.
.
)
Slide 26 - Slide
Calculating the total power of a group?
P
t
o
t
=
U
t
o
t
⋅
I
t
o
t
U
t
o
t
=
U
1
=
U
2
=
U
3
=
.
.
.
I
t
o
t
=
I
1
+
I
2
+
I
3
+
.
.
.
P
t
o
t
=
U
t
o
t
⋅
(
I
1
+
I
2
+
I
3
+
.
.
.
)
Slide 27 - Slide
Slide 28 - Slide
Slide 29 - Slide
Homework
Section 3 — Exercise
Slide 30 - Slide
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Lesson duration is: 45 minLesson duration is: 45 min
