24. Electric Force & Field; Gauss' Law

Draw the field lines for a pair of identical, positive charges.

Draw, approximately, the electric field lines emanating from a uniformly charged straight wire whose length ℓ is not great. The spacing between lines near the wire should be much less than ℓ. [Hint: Also consider points very far from the wire up to 4ℓ \.]

Draw, approximately, the electric field lines about two point charges, +Q and -3Q, which are a distance ℓ apart.

FIGURE EX24.3 shows a cross section of two infinite parallel planes of charge. Draw this figure on your paper, then draw electric field vectors showing the shape of the electric field.