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When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes?

Chemistry
JAMB 2020

When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes?

  • A. Bipolar
  • B. Negatively charged
  • C. Positively charged
  • D. Neutral
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Correct Answer: Option B
Explanation

When these cathode rays are deflected onto an electrode of an electrometer, the instrument measured a negative charge. The rays tested also were deflected by application of an electric field.

There is an explanation video available below.

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Explanation Video

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