問題詳情

53. There are two point-charges −Q, and 2Q located at the distance 2d, and 4d from the origin O, respectively. What is the electricfield at the origin O? (Vacuum permittivity is ε0)5d073314e9df0.jpg
(A) 0
(B)E= 5d07331b99698.jpg
(C)E=   5d073321a77d5.jpg
(D)E= 5d073327bfee4.jpg
(E)E= 5d07332d90019.jpg



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