A.\(\frac{{\sqrt {\left| {{R^2} - Z_C^2} \right|} }}{R}\)
B.\(\frac{{\sqrt {{R^2} + Z_C^2} }}{R}\)
C.\(\frac{R}{{\sqrt {{R^2} + Z_C^2} }}\)
D.\(\frac{R}{{\sqrt {\left| {{R^2} - Z_C^2} \right|} }}\)
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Hóa Học lớp 12
