An electric dipole of dipole moment p is placed parallel to the uniform electric field. The amount of work done in rotating the dipole by π radian is
(a ) pE
(b) 2pE
(c ) pE/2
(iv ) Zero
Answers
Answered by
1
Answer:
2PE
Explanation:
Work done by external agent in rotating the dipole
W=PE[cosθ
1
−cosθ
2
]
Consider the initial angle to be
θ
1
=0
and the final angle will be
θ
2
=180 degree
So,⇒ W=PE[cos 0
o
−cos 180
o
]=2PE
Answered by
0
Answer:
2pE
Explanation:
Correct option is
B
2PE
Work done by external agent in rotating the dipole
W=PE[cos −cos ]
Consider the initial angle to be
θ 1
=0
and the final angle will be θ 2
=180°
So,⇒ W=PE[cos 0 o
−cos 180 o
]=2PE
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