[单选题]
A light bulb is lit ib6.3v yymupbs qgq s753, 0wlc+)z (/trqrz76:.mj 4ar udbqd e0hmvby $1\,kJ$ of energy being transferred to the bulb by a potential difference of $200\,V$. This transfer happens over a time of 2 seconds.
What is the current passing through the bulb?