COMEDK · Physics · 18. Capacitance
Effective capacitance between \(A\) and \(B\) in the figure shown is (all capacitances are in \(\mu \mathrm{F}\) )
- A \(21 \mu \mathrm{F}\)
- B \(23 \mu \mathrm{F}\)
- C \(\frac{3}{14} \mu \mathrm{F}\)
- D \(\frac{14}{3} \mu \mathrm{F}\)
Answer & Solution
Correct Answer
(D) \(\frac{14}{3} \mu \mathrm{F}\)
Step-by-step Solution
Detailed explanation
The given combination is a balanced condition of Wheatstone bridge because potential at \(C\) and \(D\) points is same. Hence, the \(2 \mu \mathrm{F}\) capacitor can be neglected. The equivalent circuit is given by the figure below In the upper arm capacitors…
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
- One coolie takes \(1\mathrm{min}\) to raise a suitcase through a height of \(2 \mathrm{~m}\) but the second coolie takes \(30 \mathrm{~s}\) to raise the same suitcase to the same height. The powers of two coolies are in the ratio.COMEDK 2013 Easy
- A bus covers the first half of the total distance 6 km at a speed ' \(u\) ' and the second half at speed of \(30 \mathrm{~km} \mathrm{~h}^{-1}\). If the average speed is \(15 \mathrm{~km} \mathrm{~h}^{-1}\) the value of ' \(u\) ' is:COMEDK 2025 Easy
- The wavelength of the first line of Lyman series for \(\mathrm{H}\) - atom is equal to that of the second line of Balmer series for a \(\mathrm{H}\)-like ion. The atomic number \(\mathrm{Z}\) of \(\mathrm{H}\)-like ion isCOMEDK 2023 Medium
- A bulb of resistance 280 Ohm is supplied with a voltage \(\mathrm{V}=400 \sin \pi \mathrm{t}\). The peak current isCOMEDK 2025 Easy
- The radius of a planet is twice the radius of earth. Both have almost equal average
mass-densities. \(v_{p}\) and \(v_{e}\) are escape velocities of the planet and the earth, respectively, thenCOMEDK 2013 Medium - The power of a gun which fires 120 bullet per minute with a velocity \(120 \mathrm{~ms}^{-1}\) is : (given the mass of each bullet is \(100 \mathrm{~g}\))COMEDK 2024 Medium
More PYQs from COMEDK
- What is the frequency ' \(v\) ' of the electron in Bohr's first orbit of radius ' \(r\) ' of the hydrogen atom?COMEDK 2025 Medium
- In the reaction,
\(F e_{(a q)}^{2+}+A g_{(a q)}^{+} \rightarrow F e_{(a q)}^{3+}+A g_{(s)}\)
The standard emf \(\left(\mathrm{E}^{\circ}\right)\) of the cell is:
\(\left[\right.\) Given: \(\left.E_{\mathrm{Ag}^{+} / \mathrm{Ag}}^o=a V ; \quad E_{\mathrm{Fe}^{2+} / \mathrm{Fe}}^o=b V ; E_{\mathrm{Fe}^{3+} / \mathrm{Fe}}^o=c V\right]\)COMEDK 2025 Hard - The solution of the differential equation \(\dfrac{d y}{d x}-y=1\) given \(y(0)=1\), isCOMEDK 2025 Medium
- If \(A=\left[\begin{array}{ccc}0 & -1 & 2 \\ 1 & 0 & 3 \\ -2 & -3 & 0\end{array}\right]\), then \(A+2 A^T=\)COMEDK 2025 Easy
- Two light rays A and B travel from a medium into air at angles of incidence 15 degrees and 42 degrees respectively. In the medium, light travels 3 cm in 0.2 ns . Will there be total internal reflection? If so, which ray?COMEDK 2025 Medium
- A body of mass \(10 \mathrm{mg}\) is moving with a velocity of \(100 \mathrm{~ms}^{-1}\). The wavelength of de-Broglie wave associated with it would be
( \(\left.h=6.63 \times 10^{-34} \mathrm{Js}\right)\)COMEDK 2020 Medium