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KEAM 2016 Physics and Chemistry Paper
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© examsnet.com
Question : 40
Total: 120
If
0.1
J
of energy is stored for the flow of current of
0.2
A
in an inductor, then its inductance value is
5
H
0.5
H
5
m
H
50
H
50
m
H
Validate
Solution:
The energy stored in a inductor is given by the formula
U
=
1
2
L
i
2
Given,
U
=
0.1
J
,
i
=
0.2
A
0.1
=
1
2
L
×
(
02
)
2
⇒
L
=
2
×
0.1
(
0.2
)
2
=
0.2
0.2
×
0.2
=
10
2
=
5
H
© examsnet.com
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