COMEDK · Physics · 18. Capacitance
A capacitor of capacity \(2 ~\mu \mathrm{F}\) is charged upto a potential \(14 \mathrm{~V}\) and then connected in parallel to an uncharged capacitor of capacity \(5 ~\mu \mathrm{F}\). The final potential difference across each capacitor will be
- A 6 V
- B 4 V
- C 14 V
- D 8 V
Answer & Solution
Correct Answer
(B) 4 V
Step-by-step Solution
Detailed explanation
The initial charge \(Q\) on the first capacitor is given by \(Q = C_1 V_1\). \(Q = 2 \mu \text{F} \times 14 \text{V} = 28 \mu \text{C}\). When the two capacitors are connected in parallel, the total charge \(Q\) is conserved and is shared between the two capacitors. Let \(V\) be…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- If the ratio of diameters, lengths and Young's modulus of steel and copper wires shown in the figure are \(p, q\) and \(s\) respectively, then the corresponding ratio of increase in their lengths would be
COMEDK 2013 Easy - A ray of light enters from a rarer to a denser medium. The angle of incidence is \(i\). Then, the reflected and refracted rays are mutually perpendicular to each other. The critical angle for the pair of media isCOMEDK 2018 Hard
- A ball is projected horizontally with a velocity of \(5 \mathrm{~ms}^{-1}\) from the top of a building \(19.6 \mathrm{~m}\) high. How long will the ball take to hit the ground?COMEDK 2023 Easy
- A ray of light incident on one face of an equilateral prism at \(60^{\circ}\) enters and leaves the prism symmetrically. Refractive index of the prism material isCOMEDK 2016 Medium
- The pair of quantities having same dimensions isCOMEDK 2013 Easy
- Resonance is produced between a turning fork and a resonance column tube with upper end open and lower end closed by water surface. If the frequency of the tuning fork is 800Hz, and first two resonances are observed at lengths 9.75 cm, 31.25 cm, Find the length at which the third resonance occurs? Also find the speed of sound.COMEDK 2026 Medium
More PYQs from COMEDK
- In stcp-up transformer, relation between number of turns in primary \(\left(N_{P}\right)\) and number of turns in secondary \(\left(N_{S}\right)\) coils isCOMEDK 2020 Medium
- The equation of a simple harmonic wave is given by \(y=6 \sin 2 \pi(2 t-0 . l x)\), where \(x\) and \(y\) are in \(\mathrm{mm}\) and \(t\) is in seconds. The phase difference between two particles \(2 \mathrm{~mm}\) apart at any instant isCOMEDK 2018 Hard
- The general formula of a cycloalkene isCOMEDK 2020 Easy
- The solution which have lowest freezing point isCOMEDK 2022 Medium
- Three point charges \(-1 C,+1 C,+1 C\) are placed at points \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) respectively of a triangle ABC . What is the total potential energy of the system? [given \(\mathrm{AB}=\mathrm{AC}=6 \mathrm{~cm}\) and \(\mathrm{BC}=3 \mathrm{~cm}\) ]COMEDK 2025 Medium
- An electric dipole consists of two opposite charges, each of magnitude \(1.0 \mu \mathrm{C}\) separated by a distance of \(2.0 \mathrm{~cm}\). The dipole is placed in an external field of \(10^{5} \mathrm{NC}^{-1}\). The maximum torque on the dipole isCOMEDK 2015 Easy