Three long, straight wires form the vertices of an equilateral triangle of side 0.12…
PHYSICS · Multi-part · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
Three long, straight wires form the vertices of an equilateral triangle of side 0.12 m that lies in a horizontal plane. Each wire carries a current of 6.0 A directed into the page. The centroid C of the triangle is 0.069 m from each vertex.
(a) Determine the magnitude of the magnetic field at the centroid C produced by a single wire.
(b) Calculate the magnitude and direction of the net magnetic field at the centroid due to all three wires. Explain your vector addition clearly.
(c) The current in one of the wires is increased to 12 A while the other two remain at 6.0 A into the page. Determine the new magnitude of the net magnetic field at the centroid and describe its direction relative to the plane of the triangle.