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What is the purpose of the inner conductor in coaxial cable?
The centre conductor of a coaxial cable is used to transfer the AC signal and often comprises of either a solid copper wire or multiple strands of twisted copper wire.
What is the magnetic field outside a coaxial cable?
Okay. Well, if i sub a is equal to i sub b, if these two currents, that they’re equal in magnitude since they’re flowing in opposite directions, then i enclosed is going to be equal to 0. It means that magnetic field outside of the coaxial cable will be 0 for r greater than c region.
Why does coaxial cable have two conductors?
A coaxial cable consists of two conductors laid concentrically along the same axis. One conducting wire is surrounded by a dielectric insulator, which is in turn surrounded by the other, outer conductor, producing an electrically shielded transmission circuit.
Does fiber optic use coaxial?
Traditional cable internet uses coaxial cables to transmit data, while fiber-optic internet uses cutting-edge fiber-optic technology to send data via small, flexible strands of glass that transmit light. In addition to providing higher bandwidth, fiber optics offer a more reliable connection.
Is there anything better than fiber optics?
Microwave Fixed Wireless is as Fast as Fiber Networks Most businesses are looking to subscribe to an Internet connection in the 20Mbps to 500Mbps range. Microwave fixed wireless can easily achieve these speeds with higher reliability than fiber optic networks.
How is the magnetic field in a coaxial cable determined?
In the inner conductor is varies as and in the outer cable as . Where I is the current through any surface which has the curve of the LHS as boundary. a) We consider a circle of radius centered at the central axis of the coaxial cable in the plane perpendicular to the current.
Where are the conductors in a coaxial cable?
These cases are inside the inner conductor, inside the space between two conductors, inside the thickness of outer conductor, outside the outer conductor. A coaxial cable consists of two conductors; one is inner conductor made up of either copper or aluminum and an outer conductor of metal foil. Both the conductors are separated by an insulator.
How is the magnetic field inside a conductor determined?
Magnetic Field Inside a Conductor. The magnetic field inside a conductor with uniform current density J = I/πR 2 can be found with Ampere’s Law. Inside the conductor the magnetic field B increases linearly with r. Outside the conductor the magnetic field becomes that of a straight conductor and decreases with radius.
How to find the constant of a magnetic field?
For the RHS we need to find the total current through the circle. If we take this integral from to , we know that the current through the circle is . Thus, we can figure out the constant c)The current through the circle is minus the current through the bit of the outer conductor that goes through the circle.