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1 A capacitor is constructed from a pair of thin square plates of side-width /(i.e. Area-P) and separation 3d. Lets assume 3d<<I. A solid square conducting plate of thickness d with the same side-width I (i.e. Area - P) is inserted between the plates as shown below Charge +0 is supplied on the top plate and-0 is supplied on the bottom plate. What is the electric field E between the conductors? (Express E by Q.d l and &) a) b) Draw the electric field lines in this picture -Q Square (IxI) c) Explain the charge distribution in and on the middle conductor.
d) Find the capacitance of this device. (Express Cby d, land ) The middle conductor is now pulled out by a distance x as shown below. What is the equivalent capacitance of this device? (Express C by d, and o(Hint: Consider two capacitors in parallel.) e) -Q Square (IxI)
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