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TS EAMCET 18-July-2022 Shift 2 Solved Paper
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© examsnet.com
Question : 111
Total: 160
A flat circular coil has 100 turns of wire of radius
10
c
m
. A uniform magnetic field exists in a direction perpendicular to the plane of the coil and it grows at a rate of
0.1
T
∕
s
e
c
. the induced emf in the coil is:
π
V
10
π
V
π
10
V
2
π
V
Validate
Solution:
Number of turns in flat circular coil,
N
=
100
Radius,
r
=
10
cm
=
0.1
m
Rate of change of magnetic field,
d
B
d
t
=
0.1
T
∕
s
∴
Induced emf in the coil,
|
e
|
=
N
d
φ
d
t
=
N
⋅
d
d
t
B
A
=
N
d
d
t
B
.
π
r
2
=
N
.
π
r
2
⋅
d
˙
B
d
t
=
100
×
π
×
(
0.1
)
2
×
0.1
=
π
10
V
© examsnet.com
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