تم الحل ✓
categoryفيزياء
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
Magnet and Wire
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 strength in Figure 2 is
represented by the density of crosses. Select true or false for the current in the loop. The cardinal directions are as defined in the compass rose.
Fig. 1
B-field points into page
NW
NE
-E
SW
SE
Fig. 2
Fig 1: Magnet moving West, induced current 'b'.
Fig 2: Loop moving East, induced current 'a'.
Fig 2: Loop moving North, induced current 'b'.
Fig 1: Magnet moving East, induced current 'b'.
Fig 1: Loop moving West, induced current 'a'.
Fig 2: Loop moving East, no induced current.
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