A wire with total resistance R is formed into a circle. This circle is placed horizontally (in the xy-plane) within the constant magnetic field in the -z direction. The change of the radius of the circle with respect to time is expressed by r=ro(2-0.5t). The circle begins to contract at t = 0. (Assume that the resistance R does not change in this process). For t=1s, find the magnitude and flow direction of the current formed in the circle. (CCW = counterclockwise, CW = clockwise if we are looking from +z towards -2) (n = 3, R= 6 N, B = -2Tk, r, =2 cm ) 0.3 mA, CCW None of them O 0.1 mA, CCW ) 4 V, CW ) 0.6 mA, CW O 0.1 mA CW 0.6 mA, CW 0.3 mA, CW to
A wire with total resistance R is formed into a circle. This circle is placed horizontally (in the xy-plane) within the constant magnetic field in the -z direction. The change of the radius of the circle with respect to time is expressed by r=ro(2-0.5t). The circle begins to contract at t = 0. (Assume that the resistance R does not change in this process). For t=1s, find the magnitude and flow direction of the current formed in the circle. (CCW = counterclockwise, CW = clockwise if we are looking from +z towards -2) (n = 3, R= 6 N, B = -2Tk, r, =2 cm ) 0.3 mA, CCW None of them O 0.1 mA, CCW ) 4 V, CW ) 0.6 mA, CW O 0.1 mA CW 0.6 mA, CW 0.3 mA, CW to
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Transcribed Image Text:A wire with total resistance R is formed into a circle. This circle
is placed horizontally (in the xy-plane) within the constant
magnetic field in the -z direction. The change of the radius of
the circle with respect to time is expressed by r = ro(2-0.5t).
The circle begins to contract at t = 0. (Assume that the
resistance R does not change in this process).
For t= 1s, find the magnitude and flow direction of the
current formed in the circle. (CCW = counterclockwise, CW =
clockwise if we are looking from +z towards -z)
(n = 3, R= 6 N, B = -2 T k, ro =2 cm)
O 0.3 mA, CCW
None of them
O 0.1 mA, CCw
O 4 V, CW
O 0.6 mA, CCW
O 0.1 mA CW
O 0.6 mA, CW
O 0.3 mA, Cw
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