1) Does it make any difference whether the value of the charge q in the equation

Question

1) Does it make any difference whether the value of the charge q in the equation defining the electric field is positive or negative?

2) A large, flat sheet measures L x L; the sheet carries a uniform distribution of charge. Roughly how far from the center of the sheet would you expect the electric field to be markedly different from the uniform electric field of an infinitely large sheet?

3) a tube of force is the volume enclosed by a bundle of adjacent field lines. Such a tube of force is analogous to a stream tube in hydrodynamics, and the field lines are analogous to streamlines. along such a tube of force, the magnitude of the electric field varies in inverse proportion to the crosssectional area of the tube. Explain.

Explanation / Answer

1. yes 2.L

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