What is the line integral of between points i and f in FIGURE EX29.20?
The magnetic field integral is
We have given,
Magnetic field =
we have to find the magnetic field integral.
Apply ampere's law on wire. since wire is along with the magnetic field in the same direction then
from the diagram
FIGURE EX29.37 is a cross-section through three long wires with a linear mass density . They each carry equal currents in the directions shown. The lower two wires are apart and are attached to a table. What current I will allow the upper wire to “float” so as to form an equilateral triangle with the lower wires?
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