New capacitance when plate size, separation or the dielectric is changed
This type of question, asked 4 times: 3 May 2023 S1, 13 May 2024 S2, 13 Apr 2026 S2, 18 Apr 2026 S1. All 4 questions below, oldest first.
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Question 1
3 May 2023 S1
24Two circular metal plates each of radius are kept parallel to each other at a distance apart. The capacitance of the capacitor formed is . If the radius of each plate is increased to times the earlier radius and their separation is decreased to half the initial value, the capacitance becomes . The ratio of the capacitances isTap an option to check your answer.
Question 2
13 May 2024 S2
36In a parallel plate capacitor with air between the plates, the distance '' between the plates is changed and the space is filled with dielectric constant 8. The capacity of the capacitor is increased 16 times, the distance between the plates isTap an option to check your answer.
Question 3
13 Apr 2026 S2
129A parallel plate capacitor with air between the plate has a capacitance of pF. The separation between the plates becomes twice and the space between them is filled with a medium of dielectric constant . Then the capacitance becomes pF. The value of isTap an option to check your answer.
Question 4
18 Apr 2026 S1
128Two circular plates each of radius '' are kept parallel to each other distance '' apart. The capacitance of the capacitor formed is ''. If the radius of each of the plates is increased to times the earlier radius and their distance of separation decreased to half the initial value, the capacitance now becomes ''. The ratio isTap an option to check your answer.