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