Question

To practice Problem-Solving Strategy 28.2 Ampere's Law. A solid cylindrical conductor is supported by insulating disks on the axis of a conducting tube with outer radius Ra = 7.75 cm and inner radius Rb = 5.05 cm. (Figure 1) The central conductor and the conducting tube carry equal currents of I = 3.45 A in opposite directions. The currents are distributed uniformly over the cross-sections of each conductor. What is the value of the magnetic field at a distance r = 5.79 cm from the axis of the conducting tube? What is the value of the magnetic field at a distance r = 5.79 cm from the axis of the conducting tube? Recall that μ0=4π×10−7 T⋅m/A. Express your answer numerically in teslas.

Answer #1

A very long coaxial cable consists of a solid cylindrical inner
conductor of radius R1 surrounded by an outer cylindrical conductor
with inner radius R2 and outer radius R3. The region between the
two conductors is filled with a waxlike insulating material to keep
the conductors from touching each other.
Part A If the inner and outer conductors carry equal currents I
in opposite directions, use Ampère's law to derive an expression
for the magnetic field as a function of...

An infinitely long solid insulating cylinder of radius a = 2 cm
is positioned with its symmetry axis along the z-axis as shown. The
cylinder is uniformly charged with a charge density ρ = 27
μC/m3. Concentric with the cylinder is a cylindrical
conducting shell of inner radius b = 14.8 cm, and outer radius c =
17.8 cm. The conducting shell has a linear charge density λ =
-0.37μC/m.
1)
What is Ey(R), the y-component of the electric field...

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