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No, Faraday’s law of induction is not true. One of the fundamental laws of electromagnetism is the “Faraday's law of induction”. This law states that the induced voltage in a wire loop is equal to the speed of change of the magnetic flux enclosed with the loop, or V=dΦ/dt. In the textbooks is often given an example of a loop in the shape of a rectangle which rotates in a magnetic field. (please click on the images for a bigger view) What is meant by “the speed of change of the magnetic flux enclosed with the loop”? To explain this, we will make a comparison. If we hold a ring in front of our