Φ !" # !
$%&'# ( π ) # (
& *+π+"&) ) # (,, -.
∆Φ#!
&'∆ # &$+&$*+$+"&$*(&*& #
(*)* -.
. ∆Φ#! ∆"
α # &$+&$*+"(&$*(&*&
# (/0* -.
Φ# !
α #$&&+π+"&&% )+$+$#) &-.
! #AB +BC
∆
AB
∆"AB # ∆ # & 1 + * #$&*
∆Φ #
α ∆! #
α BC ∆"AB # &,+$+&$+&$&*#,)
-.
fem =
i=
∆Φ
∆S
= B cos α
= B cosαLv
∆t
∆t
fem BL cosα
v
=
R
R
v=
iR
0.10 A ⋅ 20Ω
m
=
= 2.7
BL cosα 2.5T ⋅ 0.3m ⋅1
s
#&
"
. fem =
2
3
∆Φ ∆(n1S1B2 cos 0°)
∆B
=
= n1S1 2 = n1S1
∆t
∆t
∆t
∆
µ 0 n2i
l
∆t
=
4
n1S1µ 0 n2 ∆i
=
l
∆t
300 ⋅ π ⋅ (0.05) ⋅ 200 ⋅ 4 ⋅ π ⋅10 −7 (500 ⋅10 −3 − 0)
=
⋅
= 0.74V
0.2
2 ⋅10−3
2
#.)(
Φ# !
fem =
". #51)3
α #π
α
)
(
#π
)
)
"
α ".)(
dΦ
d bt 2 − at
= πr 2 cosα
= πr 2 cosα [2bt − a ]
dt
dt
#51

ベクトルの内積で分配則が成り立つことの証明 a b a + b c 内積の成分