What is the magnitude of the magnetic field at a point midway between them if the top one carries a current of 19.5 A and the bottom one carries 12.5 A ? Express your answer using three significant figures.

The magnetic field will be , '2d' being the distance the wires.

Explanation:

From Biot-Savart's law, the magnetic field () at a distance '' due to a current carrying conductor carrying current '' is given by

where '' is an elemental length along the direction of the current flow through the conductor.

Using this law, the magnetic field due to straight current carrying conductor having current '', at a distance '' is given by

According to the figure if '' be the current carried by the top wire, '' be the current carried by the bottom wire and '' be the distance between them, then the direction of the magnetic field at 'P', which is midway between them, will be perpendicular towards the plane of the screen, shown by the symbol and that due to the bottom wire at 'P' will be perpendicular away from the plane of the screen, shown by symbol.

Given and

Therefore, the magnetic field () at 'P' due to the top wire

and the magnetic field () at 'P' due to the bottom wire

Therefore taking the value of the net magnetic field () at the midway between the wires will be

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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