Change in capacitance when a slab fills a fraction of the gap
The same question, asked 3 times: 16 Apr 2026 S2*, 19 Apr 2026 S1*, 13 May 2026 S2. Every wording below, oldest first.
Try each one first, then open its answer.
Question 1
16 Apr 2026 S2
128A capacitor has capacity C when it's parallel plates are separated by air medium of thickness 'd'. A slab of material of dielectric constant K having area equal to that of plates but thickness is inserted between the plates. Capacitance of the capacitor in the presence of slab will beTap an option to check your answer.
Question 2
19 Apr 2026 S1
126A slab of material of dielectric constant has the same area as the plates of a parallel plate capacitor but has a thickness , where is the separation of the plates. The capacitance in the presence and absence of dielectric are and respectively. The ratio isTap an option to check your answer.
Question 3
13 May 2026 S2
128A slab of material of dielectric constant has the same area as the plates of the parallel plate capacitor but has thickness , where is the separation of the plates. How is the capacitance changed, when the slab is inserted between the plates? ( = original capacitance)Tap an option to check your answer.