(10 pts) Two concentric coils, lying in the same plane, carry currents in opposite directions. The current in the larger coil 1 is fixed. Current
i_(2)
in coil 2 can be varied. Figure
b
gives the net magnetic moment of the two-coil system as a function of
i_(2)
. The vertical axis scale is set by
\mu _(net,s)=2\times 10^(-5)A.m^(2)
and the horizontal axis scale is set by
i_(2s)=10.0mA
. If the current in coil
2
is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when
i_(2)=7.0mA
. Show your work for full credit (b)

Question

(10 pts) Two concentric coils, lying in the same plane, carry currents in opposite directions. The current in the larger coil 1 is fixed. Current

i_(2)

in coil 2 can be varied. Figure

b

gives the net magnetic moment of the two-coil system as a function of

i_(2)

. The vertical axis scale is set by

\mu _(net,s)=2\times 10^(-5)A.m^(2)

and the horizontal axis scale is set by

i_(2s)=10.0mA

. If the current in coil

2

is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when

i_(2)=7.0mA

. Show your work for full credit (b)

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