MHT CET · Physics · Capacitance
If dielectric is inserted in charged capacitor (battery removed), then quantity that remains constant is
- A capacitance
- B potential
- C intensity
- D charge
Answer & Solution
Correct Answer
(D) charge
Step-by-step Solution
Detailed explanation
Variation of different variables (Q, \(C, V, E\) and \(U\) ) of parallel plate capacitor when dielectric \((K)\) is introduced when battery is removed is
\(
\begin{array}{ll}
C^{\prime}=K C & E^{\prime}=E / K \\
Q^{\prime}=Q & U^{\prime}=U / K \\
V^{\prime}=V / K &
\end{array}
\)
\(
\begin{array}{ll}
C^{\prime}=K C & E^{\prime}=E / K \\
Q^{\prime}=Q & U^{\prime}=U / K \\
V^{\prime}=V / K &
\end{array}
\)
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 relation is not correct of the followings?MHT CET 2010 Easy
- A radioactive element \({ }_{92}^{242} \mathrm{X}\) emits two \(\alpha\) particles, one electron and two positrons. The product nucleus is represented by \({ }_{\mathrm{P}}^{234} \mathrm{Y}\). The value of P isMHT CET 2025 Medium
- Two coils A and B have mutual inductance 0.008 \(\mathrm{H}\). The current changes in the coil \(\mathrm{A}\), according to the equation \(\mathrm{I}=\mathrm{I}_{\mathrm{m}} \sin \omega \mathrm{t}\), where \(I_m=5 A\) and \(\omega=200 \pi \mathrm{rad} \mathrm{s}^{-1}\). The maximum value of the e.m.f. induced in the coil B in volt isMHT CET 2023 Medium
- For the diagram shown, the resistance between points A and B when the ideal diode ' \(D\) ' is forward biased is ' \(R_1\) ' and that when reverse biased is ' \(R_2\) '. The ratio \(\frac{R_1}{R_2}\) is
MHT CET 2024 Medium - At what temperature is the R.M.S. velocity of Hydrogen molecule equal to that of an oxygen molecule at \(47^{\circ} \mathrm{C}\) ? (Molecular weight of hydrogen \(=2\), Molecular weight of oxygen \(=32\) )MHT CET 2020 Easy
- One complete set of negative and positive values of alternating quantities is calledMHT CET 2012 Medium
More PYQs from MHT CET
- A mass \(2 \sqrt{3} \mathrm{~kg}\) is acted upon by two forces which are inclined to each other at \(60^{\circ}\) and each of magnitude \(1 \mathrm{~N}\). The acceleration of that mass in SI system is \(\left[\sin 30^{\circ}=\cos 60^{\circ}=0.5\right]\)MHT CET 2020 Easy
- The apparent wavelength of light from a star moving away from the earth is \(0.02 \%\) more than the actual wavelength. The velocity of star is \(\left[\mathrm{c}=\right.\) velocity of light \(\left.=3 \times 10^8 \mathrm{~m} / \mathrm{s}\right]\)MHT CET 2025 Medium
- An acid dissociated to \(1.5 \%\) in its \(0.1 \mathrm{M}\) solution. Calculate its dissociation constant.MHT CET 2022 Medium
- Given below are two statements with reference to secondary treatment of sewage.
Statement I: The BOD of effluent increases.
Statement II: Flocks of bacteria consume major part of the organic matter present in the effluent.
In the light of above statements, choose the most appropriate answer from the options given below.MHT CET 2022 Easy - If \(\overrightarrow{\mathrm{A}}=a_{1} \hat{\imath}+a_{2} \hat{\jmath}\) and \(\overrightarrow{\mathrm{B}}=b_{1} \hat{\imath}+b_{2} \hat{\jmath}\) are perpendicular to each other thenMHT CET 2020 Easy
- In Young's double slit experiment, \(8^{\text {th }}\) maximum with wavelength ' \(\lambda_1\) ' is at a distance ' \(\mathrm{d}_1\) ' from the central maximum and \(6^{\text {th }}\) maximum with wavelength ' \(\lambda_2\) ' is at a distance ' \(\mathrm{d}_2\) '. Then \(\frac{\mathrm{d}_2}{\mathrm{~d}_1}\) isMHT CET 2023 Medium