. One long wire carries a current of 30 A along the entire x axis. A second-long wire carries a current of 40 A perpendicular to the xy plane and passes through the point (0, 4) m. What is the magnitude of the resulting magnetic field at the point y = 2.0 m on the y axis?

magnitude of net magnetic field at given point is

Explanation:

As we know that magnetic field due to a long current carrying wire is given as

here we we will find the magnetic field due to wire which is along x axis is given as

r = 2 m

now we have

into the plane

Now similarly magnetic field due to another wire which is perpendicular to xy plane is given as

r = 2 m

now we have

along + x direction

Since the two magnetic field is perpendicular to each other

So here net magnetic field is given as

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less than one you can't create energy