JEE Mains · Physics · STD 12 - 2. Electric potential and capacitance
Identify the valid statements relevant to the given circuit at the instant when the key is closed.

A. There will be no current through resistor \(R\).
B. There will be maximum current in the connecting wires.
C. Potential difference between the capacitor plates A and B is minimum.
D. Charge on the capacitor plates is minimum.
Choose the correct answer from the options given below:
- A A, C Only
- B A, B, D Only
- C C, D Only
- D B, C, D Only
Answer & Solution
Correct Answer
(D) B, C, D Only
Step-by-step Solution
Detailed explanation
Capacitor behaves like closed circuit at \(t=0\) and charge is zero. \(\mathrm{A} X, \mathrm{~B} \checkmark, \mathrm{C} \checkmark, \mathrm{D} \checkmark\)
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
- The surface tension of soap solution is \(3.5 \times 10^{-2}\,Nm ^{-1}\). The amount of work done required to increase the radius of soap bubble from \(10\,cm\) to \(20\,cm\) is \(.....\times 10^{-4}\,J\)JEE Mains 2023 Medium
- The radius of curvature of each surface of a convex lens having refractive index \(1.8\) is \(20\,cm\). The lens is now immersed in a liquid of refractive index \(1.5\). The ratio of power of lens in air to its power in the liquid will be \(x : 1\). The value of \(x\) is \(.....\)JEE Mains 2023 Medium
- What will be the most suitable combination of three resistors \(A =2\, \Omega, B =4\, \Omega, C =6\, \Omega\) so that \(\left(\frac{22}{3}\right)\Omega\) is equivalent resistance of combination\(?\)JEE Mains 2022 Medium
- \(I _{ CM }\) is moment of inertia of a circular disc about an axis \(( CM )\) passing through its center and perpendicular to the plane of disc. \(I _{ AB }\) is it's moment of inertia about an axis \(A B\) perpendicular to plane and parallel to axis \(CM\) at a distance \(\frac{2}{3} R\) from center. Where \(R\) is the radius of the disc. The ratio of \(I _{ AB }\) and \(I _{ CM }\) is \(x: 9\). The value of \(x\) is \(........\)
JEE Mains 2023 Medium - An object moves with speed \(v_1, v_2\), and \(v_3\) along a line segment \(A B, B C\) and \(C D\) respectively as shown in figure. Where \(AB = BC\) and \(AD =3 AB\), then average speed of the object will be :
JEE Mains 2023 Medium - A magnet hung at \(45^{\circ}\) with magnetic meridian makes an angle of \(60^{\circ}\) with the horizontal. The actual value of the angle of dip is.JEE Mains 2022 Medium
More PYQs from JEE Mains
- \(\smallint \left( {1 + x - \frac{1}{x}} \right){e^{x + \frac{1}{x}}}\;dx = \)JEE Mains 2014 Hard
- Let the locus of the centre \((\alpha, \beta), \beta>0\), of the circle which touches the circle \(x ^{2}+( y -1)^{2}=1\) externally and also touches the \(x\)-axis be \(L\). Then the area bounded by \(L\) and the line \(y =4\) is.JEE Mains 2022 Hard
- An object of uniform density rolls up the curved path with the initial velocity \(v_0\) as shown in the figure. If the maximum height attained by an object is \(\dfrac{7v_0^2}{10g}\) (\(g\) = acceleration due to gravity), the object is a _______.
JEE Mains 2026 Medium - The equation of the chord, of the ellipse \(\frac{x^2}{25}+\frac{y^2}{16}=1\), whose mid-point is \((3,1)\) is :JEE Mains 2025 Medium
- Let \(\mathrm{g}(\mathrm{x})\) be a linear function and \(f(x)=\left\{\begin{array}{cl}g(x) & , x \leq 0 \\ \left(\frac{1+x}{2+x}\right)^{\frac{1}{x}} & , x>0\end{array}\right.\), is continuous at \(x=0\). If \(f^{\prime}(1)=f(-1)\), then the value of \(g(3)\) isJEE Mains 2024 Hard
- Thermodynamic process is shown below on a \(P-V\) diagram for one mole of an ideal gas. If \(V _{2}=2 V _{1}\) then the ratio of temperature \(T _{2} / T _{1}\) is ...... .
JEE Mains 2021 Hard