Saved Bookmarks
| 1. |
A cylindrical capacitor with external radius R, internal radius R-d(dltltR ), length l and mass M hangs on an insulating cord in a region where there is a homogenous, vertical magnetic field of strength B. It can rotate freely as a whole around its vertical axis, but is constrained, so that it can not move horizontally. The capacitor is charged and there is a voltage difference Charge on capacitor is given by |
|
Answer» `in_(0)(2piRlV)/(d)` `therefore C=in_(0)(2piRl)/(d)` `Q=CV=(in_(0)2pirlV)/(d)` `MR^(2) (DOMEGA)/(dt)=IBRd=BRd(dQ)/(dt)` `impliesMR^(2) Deltaomega = BRdDeltaQ` `impliesomega_(MAX)=(2piin_(0)VBl)/(M)` |
|