| A capacitor is connected to a cell and after a long time, a dielectric slab is allowed to fall through the gap of capacitor plates without touching them. |
 |
| As slab passes through the gap needle of a sensitive galvanometer shows |
A) no deflection at all
B) deflection towards left hand side
C) deflection towards right hand side
D) initial left then towards right hand side deflrction
Correct Answer: D
Solution :
As dielectric slab is entring the capacitor, the capacity increases and so galvanometer shows a deflection towards left. When dielectric slab is moving away from the capacitor, charge returns to cell and this causes a right hand side deflection.
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