Question

Cathode rays are composed of_____.

a. protons

b. electrons

c. neutrons

Answer 1

It’s electron B because it’s electric charged

Answer 2

negatively-charged particles.(ELECTRON) B

Step-by-step explanation:

Electrons are the negatively charged particles of atom. Together, all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus