Physics-II question paper (PHY 103) from BUTEX affiliated colleges' 2023 Level-1 Term-II finals. Questions include Wheatstone bridge via Kirchhoff's laws, Hall voltage derivation, electromagnetic induction with hysteresis curves, and RLC resonance frequency numericals.
Level-1 Term-II, Final Exám-2023
Subject: Physics-II (Code: PHY 103)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Define the following terms: i) Gauss’s law ii) Ohms law iii) Capacitor.
(b) Deduce Wheatstone’s bridge principle using kirchhoff’s law.
(c) Show that, .
[3+6+3 = 12]
2. (a) What is hall effect? Deduce the equation of Hall voltage.
(b) Derive an expression for torque on a current carrying loop.
(c) A conductor of length 0.5m is situated at an angle of 30° with a uniform magnetic field of 1.5T. If 10A current flows through the conductor then alculate the magnetic force acting on it.
[4+4+4 = 12]
3. (a) State and explain Faraday’s Law of electromagnetic induction?
(b) What is Hysteresis? State and Explain the Hysteresis curve of a magnetic material.
(c) State Lenze’s law. Explain how lenze’s indicates the direction of induction.