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AP EAMCET Engineering 22 Sep 2020 Shift 1 Paper
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© examsnet.com
Question : 112
Total: 160
A dipole is placed in a uniform electric field, its potential energy will be minimum when the angle between its axis and field is
Zero
π
π
2
2
π
Validate
Solution:
Potential energy of a electric dipole in electric field is given as
U
=
−
p
E
cos
θ
For minimum value
U
,
cos
θ
should be maximum as
1
.
i.e.,
cos
θ
=
1
=
cos
0
∘
⇒
θ
=
0
∘
© examsnet.com
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