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AIEEE 2006 Solved Paper
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© examsnet.com
Question : 89
Total: 143
In an
A
C
generator, a coil with
N
turns, all of the same area
A
and total resistance
R
, rotates with frequency
ω
in a magnetic field
B
. The maximum value of
e
m
f
generated in the coil is
N.A.B.R.
ω
N.A.B
N.A.B.R
N.A.B.
ω
Validate
Solution:
e
=
−
d
φ
d
t
=
−
d
(
N
→
B
⋅
→
A
)
d
t
=
−
N
d
d
t
(
B
A
cos
ω
t
)
=
N
B
A
ω
sin
ω
t
⇒
e
max
=
N
B
A
ω
© examsnet.com
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