SAMPLE PROBLEM (Class 10)
ANS. a)
i
m
=
i
dm
,
i
dm
= 7.60
μ
A,
so
i
m
= 7.60
μ
A
¯¯¯¯¯¯¯¯¯¯¯¯
s
/
m
kV
859
s
/
m
V
10
59
.
8
m
/
F
10
85
.
8
A
10
60
.
7
so
,
b)
5
12
6
0
0
⋅
=
⋅
×
=
Φ
×
×
=
=
Φ
Φ
=


m
E
dm
m
E
m
E
dm
dt
d
i
dt
d
dt
d
i
ε
ε
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2
6
7
2
0
2
2
0
2
2
2
2
0
3
6
2
12
2
0
2
0
2
0
0
m)
180
.
0
(
2
m)
110
.
0
A)(
10
60
.
7
m)(
/
F
10
4
(
2
and
,
2
Then,
Also,
.
2
symmetry,
of
Because
.
d)
mm
39
.
3
m
10
39
.
3
A
10
60
.
7
s)
/
rad
130
(
V)
220
(
m)
180
.
0
(
m)
/
F
10
85
.
8
(
so
,
Therefore,
However,
.
and
,
cos
Then,
cos
,
sin
since
and
,
,
Since
.
so
,
c)
π
π
π
μ
μ
π
π
π
π
μ
π
ϖ
π
ε
ϖ
π
ε
π
ε
ε
ϖ
ϖ
ϖ
ϖ
ϖ
ϖ
ε
ε
ε
ε
ε
ε
ε
ε
ε





×
×
=
=
=
=
=
∫
=
⋅
∫
=
⋅
=
×
=
×
×
=
=
=
=
=
=
=
=
=
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 Spring '06
 Stoler

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