A charged particle of mass \[5\times {{10}^{-5}}kg\] is held stationary in space by placing it in an electric field of strength \[{{10}^{7}}N{{C}^{-1}}\] directed vertically downwards. The charge on the particle is [EAMCET 2000]

• A.            \[-20\times {{10}^{-5}}\mu C\]
• B.                                      \[-5\times {{10}^{-5}}\mu C\]
• C.            \[5\times {{10}^{-5}}\mu C\]
• D.                                      \[20\times {{10}^{-5}}\mu C\]