net,s CN 2s - net,s i2 (mA) In the figure on the left two concentric coils lying

Question

net,s CN 2s - net,s i2 (mA) In the figure on the left two concentric coils lying in the same plane carry currents in opposite directions. The current in the larger coil 1 is fixed. Current i2 in coil 2 can be varied. The figure on the right gives the net magnetic moment of the two coil system as a function of i2. The vertical axis scale is set by net s 5.00x10 5 A"m2 and the horizontal axis scale is set by i2s = 5.00 m. If the current in coil 2 is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when i2 = 4.000 mA? Submit Answer Incorrect. Tries 1/10 Previous Tries

Explanation / Answer

increase in magnetic moment due i2 = [unets - - unets]*4mA/5mA

= 2*5e-5*4/5

= 0.00008 Am^2

Not total magnetic moment = 5e-5 + 0.00008

= 0.00013 A*m^2 answer

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