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AIEEE 2002 Physics Solved Paper
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© examsnet.com
Question : 65
Total: 75
A conducting square loop of side
L
and resistance
R
moves in its plane with a uniform velocity
v
perpendicular to one of its sides. A magnetic induction
B
constant in time and space, pointing perpendicular and into the plane at the loop exists everywhere with half the loop outside the field, as shown in figure. The induced
e
m
f
is
zero
R
v
B
v
B
L
/
R
v
B
L
Validate
Solution:
The induced em
f
is
e
=
−
d
φ
d
t
=
−
d
(
→
B
⋅
→
A
)
d
t
=
−
d
(
B
A
cos
0
∘
)
d
t
∴
e
=
−
B
d
A
d
t
=
−
B
d
(
ℓ
×
x
)
d
t
=
−
B
ℓ
d
x
d
t
=
−
B
ℓ
v
© examsnet.com
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