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UPSEE 2018 Solved Paper

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Question : 19

Total: 150

An ellipse has a uniform linear positive charge density in upper half (total upper half part charge +Q ) and a uniform linear negative charge density in lower half (total lower half part charge −Q ) as shown in figure. Here, semi-minor axis b< a semi-major axis. Select the correct statement about the magnitude of electric dipole moment p of the ellipse.

p=
Qb
2
0<p<
Qb
2
Qb
2
<p<2Qb
2Qb

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