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Electromagnetic Induction-CBSE Class 12th NCERT Solution

Aug 16, 2013 16:42 IST

    Get, detailed solutions to the questions of the chapter Electromagnetic Induction from NCERT textbooks. The objective is to helping students regarding the pattern of answering the question as per the cbse latest marking scheme.Cbse.jagranjosh.com provided you NCERT solutions for classes 12th math and science subjects.

    Some questions of this chapter are given here

    Q. A long solenoid with 15 turns per cm has a small loop of area2.0 cm2 placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 2.0 A to 4.0 A in 0.1 s,what is the induced emf in the loop while the current is changing?

    Q. A rectangular wire loop of sides 8 cm and 2 cm with a small cutis 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 thecut 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?

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    Q. A 1.0 m long metallic rod is rotated with an angular frequencyof 400 rad s–1 about an axis normal to the rod passing through its
    one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.5 T parallel to the axis exists everywhere. Calculate the emf developed between the centre and the ring.

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