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 by Faraday's Law, with the direction determined by Lenz' Law. The magnetic field is shown by the x's in Fig. 2. Choose true or false for each statement for the current in the loop. (The compass directions are defined in the usual way.) fig1: Magnet moving West, induced current a. fig2: Loop moving North, induced current a. fig2: Loop moving North, no induced current. fig2: Loop moving North, induced current b. fig1: Loop moving West, induced current b. fig2: Loop moving South, induced current b.

Explanation / Answer

Fig1: magnet moving west, induced current b ( direction of induced current in the loop such that it opposes change in flux)

Fig2:true, by moving the loop , flux changes hence induced current will be generated. According to right hand rule it is a

Fig2: false,

Fig2:false

Fig1:false, loop moving west, magnetic flux decreases . and hence induced current is a

Fig2: true

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