已知厚度为d的无限大带电导体平板，两表面上电荷均匀分布，电荷面密度如图所示，则板外两侧的电场强度的大小为( )A.E=dfrac(2sigma )({varepsilon )_(0)}B.E=dfrac(sigma )({varepsilon )_(0)}C.E=dfrac(sigma )(2{varepsilon )_(0)}D.E=dfrac(sigma d)(2{varepsilon )_(0)}

已知厚度为d的无限大带电导体平板，两表面上电荷均匀分布，电荷面密度如图所示，则板外两侧的电场强度的大小为(   )

A.$E=\dfrac{2\sigma }{{\varepsilon }_{0}}$

B.$E=\dfrac{\sigma }{{\varepsilon }_{0}}$

C.$E=\dfrac{\sigma }{2{\varepsilon }_{0}}$

D.$E=\dfrac{\sigma d}{2{\varepsilon }_{0}}$