Metering Rod
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Metering Rod
A long plastic rod has a radius a and carries elecric charge uniformly distrubuted within it.?
A long plastic rod has a radius a and carries elecric charge uniformly distrubuted within it. The charge contained in a 1-meter length is lambda.
Find the total electric flux through a coaxial cylindrical surface of radius a/2 and length 5m? can you help me please.
thanks
..or imagine a cylinder round your plastic rod..the E-field will be pointing out radially from the rod. There will be no flux out the ends of the cylinder onl from the curved surfaces.
For Engineers who prefer the real world to physics theory, there is a simple principle here..
the Flux of E =E*A=enclosed charge/eo (brilliant for simple symnetrical geometries like this)
here A=5*pi*a^2/4 and enclosed charge =5*lambda
So E=4*lambda/(pi*a^2*eo)..in case that was the next question..
More Quadrajet tuning, some things! Part two in this Saga Sept 13, 2010
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