Before the discovery of electron and neutron how would J.J Thompson got to know that cathode is negative and anode is positive?
Answers
Answer:
While performing experiment he observed that when charged metal plates were introduced the cathode rays bent towards positively charged plate and thus away from negatively charged one since the negative repels negative he assumed that cathode is negative and so the opposite is annode and is positive.
Explanation:
J. J. Thomson found that the path taken by the cathode ray could be bent towards a positive metal plate, and away from a negative metal plate. As a result, he reasoned that the particles in the cathode ray were negative. Further experiments with magnets proved that the particles in the cathode ray also had mass.
when we read this one question arrives that is :
How did JJ Thomson know the electron was negative?
Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.