37. Charge Q is spread uniformly along the circumference of a circle of radius R. A point particle with charge q is placed at the center of this circle. The total force exerted on the particle can be calculated by Coulomb's law:
(A) just use R for the distance
(B) just use 2R for the distance
(C) just use 2πR for the distance
(D) the result of the calculation is zero
(E) none of the above.
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統計: A(3), B(0), C(1), D(15), E(0) #3093878
統計: A(3), B(0), C(1), D(15), E(0) #3093878
詳解 (共 1 筆)
#6071867
雖然合力的確是0 (D)可選
但好像A也是對的吧
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