The direction of the electric field shown in each part of Figure 24.5 is that produced by the charge distribution in the wire. Justify the direction shown in each part, using the Coulomb force law and the definition of E= F/q, where q is a positive test charge.

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2 +++ DO t = 0 E +++ t= 714 (b) t = T E (d) (*** t= 7|2 (c) E E