CUET · PHYSICS · PYQ PAPER 2025
In an inductive circuit, the current falls from 7.5 A to 1.5 A in 0.15 s. It induces emf of 220 V in the inductive coil. The inductance of the circuit is
- A 11 H
- B 5.5 H
- C 4.5 H
- D 3.9 H
Answer & Solution
Correct Answer
(B) 5.5 H
Step-by-step Solution
Detailed explanation
\( L = \frac{\varepsilon \Delta t}{|\Delta I|} \) \( L = \frac{220 \, \text{V} \times 0.15 \, \text{s}}{|1.5 \, \text{A} - 7.5 \, \text{A}|} \) \( L = \frac{33 \, \text{V} \cdot \text{s}}{6.0 \, \text{A}} \) \( L = 5.5 \, \text{H} \)
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
- An electric dipole is placed in a uniform electric field. Its potential energy will be minimum when the angle between its dipole moment and the electric field isCUET 2025 Hard
- A motor has an armature resistance \( 4 \, \Omega \). It is operating on 220 V. At its full speed, it develops a back emf of 200 V. The current in the armature when the motor is switched on will be :CUET 2023 Medium
- A converging lens is used to form image on a screen. When the lower half of the lens is covered by an opaque screen then, the correct statements are :
(A) Intensity of Image will decrease.
(B) Intensity of Image will increase.
(C) Complete Image will be formed.
(D) Half the Image will disappear.CUET 2023 Medium - In a parallel plate capacitor of capacitance C, a metal sheet is inserted between the plates parallel to them. If the thickness of the sheet is one third of the separation between the plates, the capacitance of the capacitor will beCUET 2025 Easy
- Arrange the following electromagnetic waves in the increasing order of their wavelength.
(A) X-rays
(B) Radio waves
(C) Gamma rays
(D) Microwaves
Choose the correct answer from the options given below:CUET 2025 Medium - The process of retrieval of information from the carrier wave at the receiver is termed as:CUET 2023 Easy
More PYQs from CUET
- A copper wire of area of cross-section \( 2 \times 10^{-6} \, \text{m}^2 \) and electron density \( 10^{28} \, \text{m}^{-3} \) carries a current of 1.6 A. Time taken by an electron to drift from one end of a 1.0 m long wire to its other end will beCUET 2025 Easy
- Which of the following enzymes are used to clarify the packed juices?
(A) Pectinases
(B) Kinases
(C) Proteases
(D) Nucleases
Choose the correct answer from the options given below:CUET 2023 Hard - Fe shows extra stability as \(\text{Fe}^{3+}\) due to :CUET 2023 Hard
- The first human-like being the hominid was called as -CUET 2025 Medium
- Which one of the following is NOT a method of molecular diagnosis for early detection of a disease?CUET 2023 Medium
- A wire of resistance \( 5 \, \Omega \) is drawn out so that its length is increased to thrice its original length. The new resistance would be :CUET 2023 Easy