Problem 21 A particle of charge q is placed in an external electric field E. Wha

Question

Problem 21 A particle of charge q is placed in an external electric field E. What is the force exerted on the particle? Select One of the Following: (a) o (b) qz/E (c) E/q (d) (e) E/ Problem 22: Which of the following best describes the electric field of an infinite line carrying a uniform linear charge density? The line runs along the r axis. Select One of the Following (a) The field points radially outward from the origin. (b) The field points radially outward from the linear charge. The field lines occupy planes parallel to the y axis. (c) The field is parallel to the linear charge and points in the positive z direction (d) The field is parallel to the linear charge and points in the negative z direction (e) The field lines are circles concentric with the linear charge. Problem 23: An object with charge Q is placed in an electric field E- (b e,d where b, c, and d are constants. What is the electric force exerted on the object by the field? Select One of the Following (a) (b c, d) (b) (Qb, Qc, d) (c) (b/g, c/Q,d/Q) (e) (Qb, Qc, Qd)

Explanation / Answer

21 - d

22 - a

23 - e

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