2nd Year Physics Chapter 15 Notes

Handwritten Very easy and understandable notes of the 2nd Year Physics Chapter 15 Notes written by Professor Mr. Adnan Khan. These notes are very helpful in the preparation of 2nd Year Physics Chapter 15 Notes for the students of the intermediate and these are according to the paper patterns of all Punjab boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • Important 2nd year physics chapter 15 mcqs for Intermediate part-II students.
  • Induced EMF and induced current
  • Definition of Motional EMF
  • Faraday's law and induced EMF
  • Important 2nd year physics chapter 15 important short questions for Intermediate part-II students.
  • Lenz's law and direction of induced EMF
  • Mutual induction
  • Self-induction
  • Energy stored in an inductor
  • Important 2nd year physics chapter 15 exercise short questions for Intermediate part-II students.
  • Alternating current generator
  • DC generator
  • Back motor effect in generators
  • Important 2nd year physics chapter 15 important long questions for Intermediate part-II students.
  • DC motor  and back EMF effect in motors
  • Transformer
  • What is back emf in motor
  • Important 2nd year physics chapter 15 numericals for Intermediate part-II students.
  • Why induced emf is called back emf of motor
  • Why induced emf is called back emf of motor.
  • Important 2nd year physics chapter 15 notes pdf for Intermediate part-II students.
  • Main causes of power loss in transformer
  • Does the induced emf in a circuit depend on the resistance of the circuit? Does the induced current depend on the resistance of the circuit?
  • Important 2nd year physics chapter 15 important questions for Intermediate part-II students.
  • A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. Is a emf induced in the loop? Give a reason for your answer.
  • Important 2nd year physics chapter 15 conceptual questions for Intermediate part-II students.
  •  A light metallic ring is released from above into vertical bar magnet viewed for above for above, does the current flow clockwise or anticlockwise in the ring?
  • Important 2nd year physics chapter 15 long questions for Intermediate part-II students.
  • What is the direction of the current through resistor R when switch S is (a) closed (b) opened.
  • Like any field, the earth’s magnetic field stores energy. Find the magnetic energy stored in a space where strength of earth’s fields is 7 x 10^-5 T , if the space occupies an area of 10 x 10^8 m2 and has a height of 750m. 
  • Important 2nd year physics chapter 15 solved exercise for Intermediate part-II students.
  • A square coil of side 16cm has 200 turns and rotates in a uniform magnetic field of magnitude 0.05T. If the peak emf is 12V, what is the angular velocity of the coil?
  • Important 2nd year physics chapter 15 exercise for Intermediate part-II students.
  • A generator has a rectangular coil consisting of 360 turns. The coil rotates at 420 rev per min in 0.14 T magnetic field. The peak value of emf produced by the generator is 50V. If the coil is 5.0 cm wide, find the length of the side of the coil.
  • Important 2nd year physics chapter 15 solved numericals for Intermediate part-II students.
  • It is desired to make an a.c generator that can produce an emf of maximum value 5kV with 50 Hz frequency. A coil of area 1m^2 having 200 turns is used as armature. What should be the magnitude of the magnetic field in which the coil rotates?
  • Important 2nd year physics chapter 15 full for Intermediate part-II students.
  • The back emf in motor is 120 V when the motor is turning at 1680 rev per min. What is the back emf when the motor turns 3360 rev per min?
  • Important scholar physics 2nd year chapter 15 for Intermediate part-II students.
  • A D.C motor operates at 240 V and has a resistance of 0.5 Ohm. When the motor is running at normal speed, the armature current is 15A. Find the back emf in the armature.  
  • Important 2nd year physics chapter 15 notes pdf free download for Intermediate part-II students.
  • A copper ring has a radius of 4.0 cm and resistance of 1.0m^-1. A magnetic field is applied over the ring, perpendicular to its plane. If the magnetic field increases from 0.2T to 0.4T in a time interval of, what is the current in the ring during this interval?
  • A coil of 10 turns and 35 cm^2 area is in a perpendicular magnetic field of 0.5T. The coil is 1.0s. Find the induced emf in the coil as it pulled out of the field
  • An ideal step-down transformer is connected to main supply of 240V. It is desired to operate a 12V, 30W lamp. Find the current in the primary and the transformation ratio?

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