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'. A True B. False Loop moving South, no induced current. A. True B. False Loop moving North, induced current 'b'. A. True B. False Loop moving West, induced current 'a'. A. True B. False Loo[moving East, induced current 'b'. A. True B. False Magnet moving West, induced current 'a'. A. True B. False

Explanation / Answer

fig 1) If the magnet moves towords east,loop moving into less magnetic fielod region.The induced emf opposes the change, from amperes right hand rule,direction of induced current is a.Given statement is true.

Fig2) There is no rate of change of flux ,there is no induced current..Given statement is True.

Fig 2)There is no rate of change of flux ,there is no induced current..Given statement is False.

Fig 1)  If the loop moves towords west,loop moving into less magnetic fielod region.The induced emf opposes the change, from amperes right hand rule,direction of induced current is a.Given statement is True.

Fig 2) If the loop moves towords east,loop moving into less magnetic fielod region.The induced emf opposes the change, from amperes right hand rule,direction of induced current is b.Given statement is True.

Fig 1)If the magnet moves towords west,loop moving into less magnetic fielod region.The induced emf opposes the change, from amperes right hand rule,direction of induced current is b.Given statement is False.

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