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Question 6: NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction

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Question 6: NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50 rad s-1 in a uniform horizontal magnetic field of magnitude 3.0 × 10-2 T. Obtain the maximum and average emf induced in the coil. If the coil forms a closed loop of resistance 10 ohm, calculate the maximum value of current in the coil. Calculate the average power loss due to Joule heating. Where does this power come,from?

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  1. Solution:
    If the circular coil rotates in the magnetic field B at an angular velocity ot, then instantaneous induced emf can be calculated.

    Source of the power is work done in rotating the coil.

    Check the complete chapter with solutions.

    NCERT Solutions for 12th Class Physics: Chapter 6-Electromagnetic Induction