Question

what evidence from the cathode ray tube experiment support the claim that electrons have a negative charge? select all that apply a the cathode ray bent away from a negatively charged plate. b the cathode ray produced heat that caused a wheel to turn. c the cathode ray cast a shadow on the tube. d the cathode ray bent toward a positively charged plate.

Explanation:

Opposite charges attract. Since cathode - ray bends towards a positively charged plate, it implies that the particles in the cathode - ray (electrons) are negatively charged. Casting a shadow and producing heat do not directly indicate the charge of electrons. Bending away from a negatively charged plate also shows that electrons are negatively charged as like charges repel.

Answer:

A. The cathode ray bent away from a negatively charged plate.
D. The cathode ray bent toward a positively charged plate.