CUET · PHYSICS · PYQ PAPER 2023
Which of the following is the correct relation between electric intensity E and electric potential V :
- A \( V = \frac{dE}{dr} \)
- B \( V = -\frac{dE}{dr} \)
- C \( E = -\frac{dV}{dr} \)
- D \( E = \frac{dV}{dr} \)
Answer & Solution
Correct Answer
(C) \( E = -\frac{dV}{dr} \)
Step-by-step Solution
Detailed explanation
The electric field intensity \(E\) is defined as the negative gradient of electric potential \(V\). This means that the electric field points in the direction where the potential decreases most rapidly, and its magnitude is equal to the rate of change of potential with distance.…
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
- Choose the correct formula for magnifying power of a simple microscope from the followingCUET 2023 Medium
- White light is used to illuminate the two slits in a Young's double slit experiment. The separation between the slits is b and the screen is at a distance D from the slits. At a point on a screen directly in front of one of the slits, certain wavelength are missing. Some of these wavelengths are :
(A) \( \lambda = \frac{b^2}{D} \)
(B) \( \lambda = \frac{2b^2}{D} \)
(C) \( \lambda = \frac{b^2}{3D} \)
(D) \( \lambda = \frac{2b^2}{3D} \)
Choose the correct answer from the options given below :CUET 2023 Medium - In a meter bridge experiment null point is obtained at 20 cm from one end when resistance X is balanced against resistance Y, where \( X < Y \). Then, the new position of the null point from the same end if X is replaced by 4X will be:CUET 2023 Medium
- In a series RLC circuit at resonance
(A) Impedance is maximum
(B) \( X_c = X_L \)
(C) Z = R
(D) \( \omega = \frac{1}{\sqrt{LC}} \)
Choose the correct answer from the options given below:CUET 2025 Easy - Choose the correct statements:
A. Diamagnetic substances have non zero resultant magnetic moment.
B. The magnetisation of a paramagnetic material is inversely proportional to the absolute temperature T.
C. At high enough temperature, a ferromagnet becomes a paramagnet.
D. Magnetic permeability of ferromagnets, \(u \gg 1\)
E. Susceptibility of Diamagnetic, \(X \gg 1\)CUET 2023 Medium - Out of the following statements, which statements explain the difference between forward biasing and reverse biasing in a p-n junction correctly?
Choose the correct answer from the options given below:Forward biasing in a p-n junction Reverse biasing in a p-n junction (A) p-side is connected to the +ve terminal and n-side to the -ve terminal of the battery. p-side is connected to the -ve terminal and n-side to the +ve terminal of the battery. (B) Depletion layer becomes thicker. Depletion layer becomes thin. (C) Resistance across the p-n junction increases. Resistance across the p-n junction decreases. (D) the current is due to majority charge carriers. the current is due to minority charge carriers. CUET 2025 Medium
More PYQs from CUET
- A 50 W, 100 V bulb is to be used on a 200 V, 50 Hz a.c. supply. Calculate the inductance of inductor used so that the bulb glows with normal brightness.CUET 2025 Easy
- Identify the incorrect statements among the following.
(A) The two charges of an electric dipole will experience force in the same direction when placed in a uniform electric field,
(B) The dipole moment is a vector quantity,
(C) The direction of the dipole moment is from +q charge towards -q charge,
(D) The torque acting on the dipole in an electric field depends on the intensity of the field and the dipole moment.
Choose the correct answer from the options given below:CUET 2025 Hard - The rise in prices before festivals is an example ofCUET 2025 Easy
- If \(A\) is a square matrix such that \(A^2=A\) and \(I\) is the identity matrix of same order as \(A\), then the matrix \((2 I+A)^3-19 A-3 I\) is equal toCUET 2025 Easy
- Match List - I (reagent) with List - II (Transformations)
List - I (Reducing Agent) List - II (Transformations) (A) Sodium Borohydride (I) Aldehyde to alkane (B) \(SnCl _2\) and HCl (II) aldehydes to Primary alcohols (C) Zn-Hg and conc. HCl (III) Nitriles to Imine (D) DIBAL-H (IV) Ester to aldehyde
Choose the correct answer.CUET 2025 Medium - What would be the amount of energy released if 1 g of a substance is converted to energy? (Given, speed of light in vacuum \(=3 \times 10^8 m s ^{-1}\) )CUET 2023 Medium