The figures below show two different situations where a current may be induced i

Question

The figures below show two different situations where a current may be induced in a loop according to Faraday's Law, with the direction given by Lenz' Law. The magnetic field is shown by the x's in Fig. 2. Select true or false for the current in the loop. (The compass directions are defined in the usual way.) Magnet moving East, induced current 'a'. Loop moving West, induced current 'a'. Loop moving East, induced current 'b'. Loop moving North, induced current "b". Magnet moving West, induced current 'a'. Loop moving South, no induced current.

Explanation / Answer

According to Lenz's law, when an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such, that it produces an current that's magnetic field opposes the change which produces it. So by this law the answers of given statements can be given as;

1) True

2) True

3) True

4) False

5) False

6) True

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