A charged particle of mass $3 \times 10^{-6} kg$ is held stationary in space in an electric field of strength $10^6 NC^{-1}$ directed vertically downwards. The charge on the particle is : <br> $(g = 10\; ms^{-2})$

Question

( A ) $5 \times 10^{-5} \mu C$
( B ) $-20 \times 10^{-3} \mu C$
( C ) $-3 \times 10^{-5} \mu C$
( D ) $20 \times 10^{-5} \mu C$