Dielectrics
A parallel plate capacitor is of area 6 cm2 and a separation 3 mm. The gap is filled with three dielectric materials of equal thickness (see figure) with dielectric constants K1 = 10, K2 = 12 and K3 = 14. The dielectric constant of a material which when fully inserted in above capacitor, gives same capacitance would be -
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Answer: (a)
- Each material spans the full 3 mm gap over one third of the area: parallel.
- So the answer is (a) 12.