Problem 5 a) A long straight metal wire of radius r1= 3.10E-2 m is surrounded by

Question

Problem 5 a) A long straight metal wire of radius r1= 3.10E-2 m is surrounded by a metalic cylindrical shell of inner radius r2= 1.19E-1 m and outter radius r3= 1.81E-1 m. The axes of the wire and the cylindrical shell coincide. The wire carries a charge per unit length 8.80E-6 C/m and the shell carries a charge per unit length -1.76E-5 C/m. Find the magnitude of the electrical field at a position p1= 7.50E-2 m? b) Find the magnitude of the electrical field at a position p2= 1.61E-1 m? Notice that this position is inside the metal! c) Find the magnitude of the electrical field at a position p3= 2.34E-1 m?

Explanation / Answer

Electric Field Electric field is defined as the electric force per unit charge. The direction of the field is taken to be the direction of the force it would exert on a positive test charge. The electric field is radially outward from a positive charge and radially in toward a negative point charge.

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