CUET · PHYSICS · PYQ PAPER 2023
Which of the following statements is not true with reference to a potentiometer ?
- A It is based on balanced Wheatstone bridge.
- B It draws no current from the voltage source being measured.
- C It is unaffected by the internal resistance of the source.
- D It is a very sensitive device to measure potential difference.
Answer & Solution
Correct Answer
(A) It is based on balanced Wheatstone bridge.
Step-by-step Solution
Detailed explanation
A potentiometer operates on the principle that the potential drop across a uniform wire is directly proportional to its length ( \(V \propto l\) ). In contrast, a meter bridge is the device specifically based on the balanced Wheatstone bridge principle. A) It is based on…
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
- The wavelength of matter wave depends upon:
A. charge
B. velocity
C. momentum
D. mass
E. charge density
Choose the correct answer from the options given below:CUET 2023 Hard - A resistor, an inductor and a capacitor are connected in series with a variable frequency source of alternating emf. At resonance, the amplitude of current depends on :
(A) Resistance
(B) Inductance
(C) Capacitance
(D) Frequency of source
Choose the correct answer from the options given below :CUET 2023 Hard - A biconvex lens has radii of curvature of 10 cm each. If the refractive index of the material of the lens is 1.5, what will be its focal length in air ?CUET 2025 Hard
- At a place, the horizontal component of earth's magnetic field is \( 4 \times 10^{-4} \text{ T} \) and angle of dip is \( 60^\circ \). The value of horizontal component of earth's magnetic field at the equator is :CUET 2023 Hard
- A radioactive substance is emitting β- particles at a certain rate. When it is heated to a high temperature, the rate of emissionCUET 2025 Medium
- Electric potential at any point \(V=-(\sqrt{23} x+4 y+5 z)\), then magnitude of electric field isCUET 2023 Medium
More PYQs from CUET
- \(\alpha\)-D(+) Glucose and \(\beta\)-D(+) Glucose areCUET 2023 Medium
- Five species of warblers studied by Mac Arthur is an example of :CUET 2023 Medium
- An electron is moving at a velocity of \( 3.2 \times 10^{7} \text{ m/s} \) in a magnetic field along a circular path of radius 20 cm. The magnitude of the magnetic field applied is (approximately)CUET 2025 Hard
- Match List-l with List-ll
Choose the correct answer from the options given below:List-l(Materials) List-lI(Conductivity ( \(\mathrm{S} \mathrm{m}^{-1}\) )) (A) Gold (I) \(1.0 \times 10^{-16}\) (B) Germanium (II) \(1.2 \times 10\) (C) Glass (III) \(4.5 \times 10^3\) (D) Graphite (VI) \(2.0\) CUET 2025 Hard - A lamp rating 8 V, 800 W is connected to a 100 V, 50 Hz a. c. source. The inductance of the choke required in the circuit is: (Take \( \pi = 3 \))CUET 2025 Hard
- Which one of the given assisted reproductive technologies (ART) involves transfer of fertilized egg into the fallopian tube?CUET 2023 Easy