Question

# 1.12 [2pt] Consider one infinitely long straight wire with a uniform charge density of 1 C/m....

1.12 [2pt] Consider one infinitely long straight wire with a uniform charge density of 1 C/m. Sketch the electric field around the wire

1.13 [2pt] In problem 1.12, calculate the magnitude of electric field at a distance R from the wire. How is it different (if any) from the field of a point charge?

1.14 [2pt] Consider two infinite wires 1 m apart with a uniform charge density per unit length 1 C/m. Calculate the force per unit length between the wires. To do this, just select a tiny, nearly point-like section of a wire of length Land calculate the force due to the electric field of the other wire using the Coulomb’s law. Your answer should be proportional to L. Divide it by L and this is the force per unit length.

1.15 [1pt] Explain, in a few sentences, how the electric force between two charged wires differs from the regular Coulomb law and why.

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