In your experiment, you attach a gold ring ID collar, of radius 0.06 m, around a
ID: 1769011 • Letter: I
Question
In your experiment, you attach a gold ring ID collar, of radius 0.06 m, around a laboratory fox, as show in the accompanying figure. Based on Google Earth data, it takes the fox 0.2 seconds to move from a region in which the ring ID collar is perpendicular to the Earths magnetic field of 5.0 x 10-5 T to one in which the ring ID collar is parallel to the Earths magnetic field. What, if any, current is induced in the ring ID collar In your experiment, you attach a gold ring ID collar, of radius 0.06 m, around a laboratory fox, as show in the accompanying figure. Based on Google Earth data, it takes the fox 0.2 seconds to move from a region in which the ring ID collar is perpendicular to the Earth½s magnetic field of 5.0 x 10-5 T to one in which the ring ID collar is parallel to the Earth½s magnetic field. What, if any, current is induced in the ring ID collarExplanation / Answer
As the ring is first perpendicular and then parallel , this changing b field gives an induced current
i = d(BA)/dt
= A dB/dt
= (3.414*0.06^2)*(5x10^-5)/(0.2)
= 0.0028286 mA