A rod PQ is connected to the capacitor p...

A rod `PQ` is connected to the capacitor plates. The rod is placed in a magnetic field `(B)` directed downwards perpendicular to the plane of the paper. If the rod is pulled out of magnetic field with velocity `vec(v)` as shown in Figure.

(a) Plate `M` will be positively charged.

(b) Plate `N` will be positively charged.

( c) Both plates will be similarly charged.

(d) No charge will be collected on plates.

Text Solution

Verified by Experts

The correct Answer is:

(a) Consider the force on an electron in `PQ`. This electron experiences a force towards `Q`. Free electrons in `PQ` tend to move towards `N`. So `M` will be positively charged.

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