A parallel plate capacitor of capacitance $$10 \mu F$$ is connected to a cell of e.m.f. 10 V and is fully charges. Now a dielectric slab (k = 3) of thickness equal to the gap between the plates is completely filled in the gap, keeping the cell connected. During the filings process,
A
the heat produced is zero
B
the increase in charge on the capacitor is $$200 \mu C$$
C
energy supplied by the cell = increase in stored potential energy + work done on the person who is filling the dielectric slab
D
energy supplied by the cell = increase in stored potential energy + work done on the person who is filling the dielectric slab + heat produced
Correct option is C. energy supplied by the cell = increase in stored potential energy + work done on the person who is filling the dielectric slab