Two parallel plate capacitors and
each having capacitance of
are individually charged by a 100 V D.C. source. Capacitor
is kept connected to the source and a dielectric slab is inserted between it plates. Capacitor
is disconnected from the source and then a dielectric slab is inserted in it. Afterwards the capacitor
is also disconnected from the source and the two capacitors are finally connected in parallel combination. The common potential of the combination will be ______
. (Assuming Dielectric constant
)
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