A wheel having mass $m$ has charges $+q$ and $-q$ on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform horizontal electric field $E =$
A wheel having mass $m$ has charges $+q$ and $-q$ on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform horizontal electric field $E =$
- A
$\frac{mg}{q}$
- B
$\frac{mg}{2q}$
- C
$\frac{mg \tan \theta}{2q}$
- D
None
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