Match List - I with List - II.
| List - I | List - II |
| (Devices) | (Application) |
| (A) Electrolytic Cell | (I) Store charges |
| (B) Parallel Plate Capacitor | (II) Maintains steady current |
| (C) Meter Bridge | (III) accelerate charges |
| (D) Van de Graff Generator | (IV) find unknown resistance |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Each device is matched by its main use in a circuit or in the laboratory.
(A) Electrolytic Cell — this matches (II) Maintains steady current. A cell provides an emf that keeps a steady current flowing in a closed circuit.
(B) Parallel Plate Capacitor — this matches (I) Store charges. A capacitor stores equal and opposite charges on its plates, \( Q = CV \).
(C) Meter Bridge — this matches (IV) find unknown resistance. It works on the Wheatstone bridge principle, \( X = R\,l/(100 - l) \).
(D) Van de Graff Generator — this matches (III) accelerate charges. It builds up a very high voltage, which is used to accelerate charged particles.