CUET · PHYSICS · PYQ PAPER 2023
A car has a fresh storage battery of e.m.f. 15 V and internal resistance \( 4 \times 10^{-2} \ \Omega \).
If the starter motor draws a current of 85 A, what is the terminal voltage of the battery when the starter is on?
- A 3.4 V
- B 11.6 V
- C 12 V
- D 12.5 V
Answer & Solution
Correct Answer
(B) 11.6 V
Step-by-step Solution
Detailed explanation
\( V = \mathcal{E} - Ir \) \( V = 15 - (85 \times 4 \times 10^{-2}) \) \( V = 15 - 3.4 \) \( V = 11.6 \text{ V} \)
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 EMM wave travelling in vacuum is described by \(\overrightarrow{ E }= E _0 \sin ( k x -\omega t) \hat{ j }\) and \(\overrightarrow{ B }= B _0 \sin ( k x -\omega t) \hat{ k }\) Which of the following relation is true ?CUET 2023 Easy
- The self inductance of an inductor does not depend on the :CUET 2023 Hard
- Which of the following statements are correct?
(A) Magnetic susceptibility is defined as ratio of Intensity of magnetisation to magnetic field intensity.
(B) Magnetic susceptibility is a ratio of similar quantities therefore has no unit.
(C) The value of magnetic susceptibility for vacuum is one.
(D) Greater is the value of intensity of magnetisation, smaller is the value of susceptibility.
(E) Smaller is the value of magnetic field intensity, smaller is value of susceptibility.
Choose the correct answer from the options given below :CUET 2023 Medium - A bar magnet of magnetic moment \(M_1\) is axially cut into two equal parts. If these two pieces are arranged perpendicular to each other in the shape of L, the resultant magnetic moment becomes \(M_2\), then the value of \(\frac{ M _1}{ M _2}\) is :CUET 2023 Easy
- In the circuit shown in the figure, the ac source gives a voltage of V = 10 cos (500t). The ammeter reading will be :
CUET 2025 Easy - The light rays travel from a glass slab with refractive index \( \mu_1 \) to the second slab with refractive index \( \mu_2 \). The refractive index of the second slab with respect to the first one is: (Assume that the two slabs have the same thickness)CUET 2025 Hard
More PYQs from CUET
- A conducting circular loop is placed in a uniform magnetic field of 10 T with its plane normal to the field. Now, the radius of the loop starts shrinking at the rate 5 mm/s. When the radius is 5 cm then the induced emf isCUET 2025 Medium
- Which of the following reactions are given by Phenols?
(A) Nitration
(B) Halogenation
(C) Oxidation
(D) Acetylation
Choose the correct answer from the options given above:CUET 2023 Medium - If \(\vec{p}\) and \(\vec{q}\) are two unit vectors such that \(|\vec{p}+\vec{q}|=\sqrt{2}\), then which of the following are correct?
(A) \(|\vec{p}|=|\vec{q}|=1\)
(B) \(\vec{p}\) and \(\vec{q}\) are orthogonal vectors
(C) \(\vec{p}\) and \(\vec{q}\) are collinear vectors
(D) \((4 \vec{p}-\vec{q}) \cdot(2 \vec{p}+\vec{q})=7\)
Choose the correct answer from the options given below :CUET 2025 Hard - For \(x \in(0,1)\), the derivative of \(\sin ^{-1} x\) with respect to \(\cos ^{-1} \sqrt{1-x^2}\) is:CUET 2023 Easy
- Consider the LPP: Max \(Z = 5x + 3y\) subject to \(3x + 5y ≤ 15, 5x + 2y ≤ 10 x ≥ 0, y ≥ 0\)
match List - I with List - II
Choose the correct answert from the option given below :List-I List-II (A) Objective function (I) \(3x + 5y ≥ 15\) (B) One constraint (II) \(x, y ≥ 0\) (C) Non-negative restrictions (III) \(Z = 5x + 3y\) (D) Point (1, 2) does not lie in the region (IV) \(3x + 5y ≤ 15\) CUET 2025 Hard - Consider the differential equation, \(x \frac{d y}{d x}=y\left(\log _e y-\log _e x+1\right)\), then which of the following are true?
(A) It is a linear differential equation
(B) It is a homogenous differential equation
(C) Its general solution is \(\log _e\left(\frac{y}{x}\right)=C x\), where \(C\) is constant of integration
(D) Its general solution is \(\log _e\left(\frac{x}{y}\right)=C_y\), where \(C\) is constant of integration
(E) If \(y(1)=1\), then its particular solution is \(y=x\)
Choose the correct answer from the options given below:CUET 2025 Medium