A dielectric slab of length l, width b, thickness d and dielectric constant k fills the space inside a parallel plate capacitor. At t=0 the slab begins to be pulled out slowly with speed v. At time t the capacity of the capacitor is
Asked by Deepak
4th August 2018,
10:44 PM
Answered by Expert
Answer:
If the dielectirc slab is pulled with velocity v, then after time t,
we have two parallel plate capacitors that are connected in parallel as shown in figure.
Length of the plate for the capacitor filled with dielectric is (l-vt) and air filled capacitor is v×t
hence the effective capacitance at time t = 
Answered by Expert
5th August 2018,
8:41 AM
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