This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes negatively charged. Cathode rays are streams of electrons. Electrons carry a negative charge. When these negatively charged particles accumulate on the electrode of an electrometer, they impart their negative charge to the instrument. Therefore, the electrometer becomes negatively charged. The final answer is A. negatively charged.