Two long straight wires pierce the plane of the paper at vertices of an equilateral triangle as shown below.They each carry 2.0 A, out of the paper.The magnetic field at the third vertex (P)has magnitude:
Two long straight wires are parallel and carry current in the same direction.The currents are 8.0 and 12 A and the wires are separated by 0.40 cm.The magnetic field at a point midway between the wires is:
The diagrams show three circuits consisting of concentric circular arcs (either half or quarter circles of radii r, 2r, and 3r)and radial lengths.The circuits carry the same current.Rank them according to the magnitudes of the magnetic fields they produce at C, least to greatest.
Two long straight wires are parallel and carry current in opposite directions.The currents are 8.0 A and 12 A and the wires are separated by 0.40 cm.The magnetic field at a point midway between the wires is:
A semi-infinite wire runs along the positive y axis, beginning at the origin (x = y = 0)and extending infinitely far in the +y direction.If the current in the wire is 12 A, what magnetic field does it create on the x axis at the point x = 3.5 cm?
The diagram shows three equally spaced wires that are perpendicular to the page.The currents are all equal, two being out of the page and one being into the page.Rank the wires according to the magnitudes of the magnetic forces on them, from least to greatest.