A parallel plate capacitor having cross-sectional area A and separation d has air in between the plates. Now an insulating slab of the same area but the thickness, 2d, is inserted between the plates as shown in figure having dielectric constant K(=4). The ratio of new capacitance to its original capacitance will be,
Held on 30 Apr 2020 · Verified 9 Jul 2026.
2:1
8:5
6:5
4:1
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