Label the following statements about J. J. Thomson's cathode-ray tube experiments shown in Figure 2.6 as true or false. (c) The cathode ray is deflected away from a positively charged plate.

Video transcript

Welcome back, everyone. We need to determine whether the following statement is true or false. Based on jj's Thompson's Cathode ray tube experiments, a cathode ray is deflected towards a positively charged plate since it's composed of negatively charged particles. So we're going to begin by recognizing the sketch of what this experiment looked like. So we have our tube and it was something like this in which we have at the end of our tube, a fluorescent screen which is coated in foss for this fluorescent screen will emit light and that would happen when our particles hit the screen. But to show how the particles are emitted, we have a control grid here which contains our cathode. So this is our cathode and this is our control grid. And inside of our cathode, we have a heater which heats up our particles and so are particles coming out of our cathode are going to pass through in the following direction where they will then hit a series of notes in which one will be for focusing our particles and the other will be for accelerating our particles. So these two are our notes. And then next, we want to make note of the fact that a part of our experiment, we have deflection plates in which we have one here and another here. Now, these were the crucial part of our experiment because here we have a voltage that was applied, creating an electric field between the plates where one plate is positively charged. And the second is negatively charged, so deflection plates. So as our particles pass through our tube and go through the deflection plates, the nature of our particles, which in this case recognize that our particles are electrons, which we recall are negatively charged are going to be deflected towards the positively charged plate. So we would produce a curb in the direction of the positively charged plate where we would ultimately hit the phosphor coated screen, which would produce a very bright light once they hit the screen. And because we've outlined the fact that these particles in the experiment were electron particles, and we understand that electrons are negative, we can confirm that the given statement is actually going to be a true statement. And so for our final answer, we would confirm that our statement given that jj's Thompson's cathode ray tube experiment, a cathode ray is deflected towards a positively charged plate since it is composed of negatively charged particles is a true statement. So a would be the final answer in our multiple choice. I hope everything I went through was clear. If you have any questions, please leave them down below and I'll see everyone in the next practice video.