A capacitor has air as dielectric medium and two conducting plates of area 12 ~cm ^2 and they are 0.6 ~cm apart. When a slab of dielectric having area 12 ~cm ^2 and 0.6 ~cm thickness is inserted between the plates, one of the conducting pla

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A capacitor has air as dielectric medium and two conducting plates of area 12 ~cm ^2 and they are 0.6 ~cm apart. When a slab of dielectric having area 12 ~cm ^2 and 0.6 ~cm thickness is inserted between the plates, one of the conducting plates has to be moved by 0.2 ~cm to keep the capacitance same as in previous case. The dielectric constant of the slab is : (Given ₀=8.834 10⁻¹² ~F / m )

Quantrex Academy · Accepted Answer

Correct answer: D. 1.50

aligned & A _ o d = A _ o (0.2+ d k ) & 0.6=0.2+ 0.6 k & k = 3 2 aligned

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