enEnglishguગુજરાતી
NEET · Physics · STD 12 - 2. Electric potential and capacitance
Two Identical capacttors \(\mathrm{C}_{1}\) and \(\mathrm{C}_{2}\) of equal capacitance are connected as shown in the circult. Terminals \(a\) and \(b\) of the key \(k\) are connected to charge capacitor \(\mathrm{C}_{1}\) using battery of \(emf \;V\; volt\). Now disconnecting \(a\) and \(b\) the terminals \(b\) and \(c\) are connected. Due to this, what will be the percentage loss of energy?.....\(\%\)
- A \(75\)
- B \(0\)
- C \(50\)
- D \(25\)
Answer & Solution
Correct Answer
(C) \(50\)
Step-by-step Solution
Detailed explanation
\(U_{\text {initial }}=\frac{1}{2} C V^{2},\) Loss \(=\frac{C \cdot C}{2(C+C)}(V-0)^{2}=\frac{1}{4} C V^{2}\) \(\%\) Loss \(=\frac{\frac{1}{4} \mathrm{CV}^{2}}{\frac{1}{2} \mathrm{CV}^{2}} \times 100=50 \%\)
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
- Which of the following combinations should be selected for better tuning of an \(L-C-R\) circuit used for communication ?NEET 2016 Medium
- Match List-\(I\) with List-\(II\).
Choose the correct answer from the options given belowList-\(I\) (Material) List-\(II\) (Susceptibility \((x)\) \(A\). Diamagnetic \(I\). \(\chi=0\) \(B\). Ferromagnetic \(II\). \( 0>\chi \geq-1\) \(C\). Paramagnetic \(II\)I. \( x>1\) \(D\). Non-magnetic \(IV\). \(0<\gamma<\varepsilon\) (a small positive number) NEET 2024 Medium - A person can see clearly objects only when they lie between \(50\,\, cm\) and \(400\,\, cm\) from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will beNEET 2016 Medium
- Twenty seven drops of same size are charged at \(220\, \mathrm{~V}\) each. They combine to form a bigger drop. Calculate the potential of the bigger drop. (In \(\mathrm{~V}\))NEET 2021 Medium
- A parallel plate capacitor is charged by connecting it to a battery through a resistor. If \(l\) is the current in the circuit, then in the gap between the plates:NEET 2024 Medium
- Given below are two statements : one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\), Assertion \((A)\) :When a fire cracker (rocket) explodes in mid air, its fragments fly in such a way that they continue moving in the same path, which the fire cracker would have followed, had it not exploded Reason \((R)\):Explosion of cracker (rocket) occurs due to internal forces only and no external force acts for this explosion. In the light of the above statements, choose the most appropriate answer from the options given below :NEET 2022 Medium
More PYQs from NEET
- A major characteristic of monocot root is the presence ofNEET 2015 Medium
- Match List I with List II:
\(\text{List - I (Ion)}\) \(\text{List - II (Group Number}\) \(\text{in Cation Analysis)}\) A. \(\text{Co} ^{2+}\) (I) \(\text{Group - I}\) B. \(\text{Mg} ^{2+}\) (II) \(\text{Group - III}\) C. \(\text{Pb} ^{2+}\) (III) \(\text{Group - IV}\) D. \(\text{Al} ^{3+}\) (IV) \(\text{Group - VI}\) NEET 2025 Medium - A particle of mass \(10\, g\) moves along a circle of radius \(6.4\, cm\) with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to \(8 \times 10^{-4}\,J\) by the end of the second revolution after the beginning of the motion \(?\) .............. \(\mathrm{m} / \mathrm{s}^{2}\)NEET 2016 Medium
- The process of translation of mRNA to proteins begins as soon as :NEET 2022 Medium
- A satellite of mass \(m\) is in circular orbit of radius \(3 R_E\) about earth (mass of earth \(M_{E}\), radius of earth \(R_{E}\)). How much additional energy is required to transfer the satellite to an orbit of radius \(9 R_{E}\)?NEET 2017 Medium
- In which one of the following, the ovules are not enclosed by an ovary wall and remain exposed ?NEET 2026 Hard