Question

what is the best statement for thomsons reasoning in assigning the electron a negative charge? a in the cathode - ray tube experiment the beam of electrons was repelled by the positively charged plate placed above the tube. b in the cathode - ray tube experiment the beam of electrons was not affected by the positively charged plate placed above the tube. c in the cathode - ray tube experiment the beam of electrons was attracted to the positively charged plate placed above the tube. d in the cathode - ray tube experiment the beam of electrons was attracted to the negatively charged plate placed above the tube.

Explanation:

Opposite charges attract. In Thomson's cathode - ray tube experiment, electrons were attracted to the positively - charged plate, indicating they have a negative charge.

Answer:

C. In the cathode ray tube experiment the beam of electrons was attracted to the positively charged plate placed above the tube.