Home Physics Electrostatics Potential & Capacitance Capacitance A parallel plate capacitor is filled with a …
Physics Electrostatics Potential & Capacitance Capacitance MCQ (Single Correct)

A parallel plate capacitor is filled with a dielectric up to one half of the distance between the plates. The manner in which the potential between the plates varies with distance is illustrated in the figure. Which half (1 or 2) of the space between the plates is filled with the dielectric and what will be the distribution of the potential after the dielectric is taken out of the capacitor provided that;

A
The charges on the plates are conserved or
B
The potential difference across the capacitor is constant.

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The correct answer is:
CHECK THE SOLUTION.

Sol. 1st part has di-electric;

by E = ; Q remain constant so electric field in region 1 varies same as region 2, so now electric field graph of obtain by extend E of region 2

now V is constant so by E = ; electric field graph directly obtain by joining A and B.

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