31. Determine tiie correct unit and magnitude of the electric field at distance x from the midpoint of a
very long line of unifonnly distributed positive charge. Assume x is much smaller then the length of
the wire, and let λ be the charge par unit length.
(A)
(B)
(C)
(D)
(E)
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統計: A(8), B(3), C(1), D(1), E(0) #3222798
統計: A(8), B(3), C(1), D(1), E(0) #3222798
詳解 (共 1 筆)
#6064799
答案 (A)
51. An infinite long wire is charged uniformly with line charge density λ. What is the electric field at a point with a distance y from the stick? (Electric constant is ε0)
(A) 

(B) 

(C) 

(D) 

(E) 

0
0