CUET · PHYSICS · PYQ PAPER 2023
Choose the correct statements, when a cell of emf E and internal resistance r connected to external resistance R having current I flowing through the circuit is:
A. Potential difference across the terminals of the cell in a closed circuit having resistance R is always less than the emf.
B. For practical calculations, the internal resistance of the cells in the circuits may be neglected when the current I is such that E >> I.
C. Terminal potential difference in a closed circuit is always more than emf E.
D. Terminal potential difference versus current graph for a cell with closed circuit having resistance R is a straight line with a negative slope.
Choose the correct answer from the options given below:
- A A and D only
- B A, B, C and D only
- C A, B and D only
- D B only
Answer & Solution
Correct Answer
(A) A and D only
Step-by-step Solution
Detailed explanation
A. Correct. \(V = E - Ir\), where \(Ir > 0\). B. Incorrect. The condition for neglecting internal resistance is typically \(Ir \ll E\) or \(r \ll R\). C. Incorrect. \(V D. Correct. The equation \(V = E - Ir\) is linear with slope \(-r\). A and D only
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
- A capacitor of capacitance C is first charged by a battery of V volts. It is disconnected from the battery and is filled with a dielectric of dielectric constant K. The ratio of energy stored in the two cases, respectively will beCUET 2025 Hard
- Two bulbs marked 220 V, 200 W and 220 V, 1000 W, respectively, are connected in series to 220 V mains supply. The ratio of heat generated in them, respectively will beCUET 2025 Medium
- A charge q moves with a velocity of \(2 m s^{-1}\) along x-axis in a uniform magnetic field \(\vec{B} = \hat{i} + 2\hat{j} + 3\hat{k}\), then charge will experience a forceCUET 2023 Medium
- Which of the following is NOT correct in the case of the output obtained from a full wave rectifier?CUET 2025 Easy
- A straight wire of mass 200 g and length 1.5 m carrying a current of 2 A is placed in a uniform magnetic field at right angles to its direction, is suspended in mid air. The magnitude of magnetic field is : \(\left(g=9.8 m / s ^2\right)\)CUET 2023 Hard
- In a Wheatstone bridge, the resistances \( R_1, R_2, R_3 \) and \( R_4 \) present in four arms are \( 10 \Omega, 30 \Omega, 30 \Omega \) and \( 90 \Omega \) respectively. If the galvanometer resistance is \( 50 \Omega \) and the voltage of the battery is 7 V and its internal resistance is \( 5 \Omega \), then the total current drawn from the battery is
CUET 2025 Medium
More PYQs from CUET
- Fe shows extra stability as \(\text{Fe}^{3+}\) due to :CUET 2023 Hard
- Match List-I with List-II
List-I (Electromagnetic Waves) List-II (Production) (A) Radio waves (I) Vibration of atoms and molecules (B) X-rays (II) originates from an atomic nucleus (C) \( \gamma \)-radiation (III) produced by accelerating electrons in a circuit (D) infrared waves (IV) emitted from heavy atoms
Choose the correct answer from the options given below:CUET 2025 Easy - If \(x=t^2\) and \(y=t^3\), then \(\frac{d y}{d x}=6\) at \(t=\)CUET 2023 Easy
- If A and B are independent events, then which of the following is/are true?
(A) \(\bar{A}\) and B are independent events
(B) \(P(A \cap B)=0\)
(C) \(\bar{A}\) and \(\bar{B}\) are independent events
(D) \(P(A \cap B)=P(A)+P(B)\)
Choose the correct answer from the options given below:CUET 2025 Hard - The following reaction is known as
CUET 2025 Easy - Which of the following statements is correct for the galvanic cell?CUET 2025 Easy