Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions.What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the 30-A current and 25 cm from the other wire?
A)51 $\mu$T
B)33$\mu$T
C)72 $\mu$T
D)64 $\mu$T
E)46$\mu$T

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The Answer of Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions.What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the 30-A current and 25 cm from the other wire?
A)51 $\mu$T
B)33$\mu$T
C)72 $\mu$T
D)64 $\mu$T
E)46$\mu$T

Two Long Straight Parallel Wires Separated by a Distance of 20