CBSE Sample Papers NCERT Books

Chapter 6 Electromagnetic Induction

In the sixth chapter of Physics NCERT Class 12, you get to learn about electromagnetic induction. This chapter contains a bit of the previous chapter’s information about magnetism and matter too. The chapter comprises ten topics in total, and teach you about the concept of magnetic induction, magnetic flux, inductance, eddy currents and a lot more. You will also get to learn about Faraday’s Law of electromagnetic induction, Fleming’s Right Hand Rule, and Lenz’s Law in this chapter.

Download pdf of NCERT Solutions for Class Physics Chapter 6 Electromagnetic Induction

Download pdf of NCERT Examplar with Solutions for Class Physics Chapter 6 Electromagnetic Induction

Exercise 1

•  Q1 A rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the loop. What is the emf developed across the cut if the velocity of the loop is 1 cm s−1 in a direction normal to the (a) longer side, (b) shorter side of the loop? For how long does the induced voltage last in each case? Ans: Length of the rectangular wire, l = 8 cm = 0.08 m Width of the rectangular wire, b = 2 cm = 0.02 m Hence, area of the rectangular loop, A = lb = 0.08 × 0.02 = 16 × 10−4 m2 Magnetic field strength, B = 0.3 T Velocity of the loop, v = 1 cm/s = 0.01 m/s (a) Emf developed in the loop is given as: e = Blv = 0.3 × 0.08 × 0.01 = 2.4 × 10−4 V Time taken to travel along the width , t = Distance traveled / Velocity = b / v                                                                     =  0.02 / 0.01 = 2 s Hence, the induced voltage is 2.4 × 10−4 V which lasts for 2 s. (b) Emf developed, e = Bbv = 0.3 × 0.02 × 0.01 = 0.6 × 10−4 V Time taken to travel along the length, t = Distance traveled / Velocity = l / v                                                                      =  0.08 / 0.01 = 8 s Hence, the induced voltage is 0.6 × 10−4 V which lasts for 8 s.

Popular Questions of Class 12 Physics

• NCERT Chapter