PHYSICS ON CATHODE RAY OSCILLOSCOPE //2025 GCE GCE EXAM

[00:00:00]In today's tutorial, we're simply going to consider that is physics as an exam build-up session.

[00:00:11]Of course, we're simply going to discuss that is the cathode ray oscilloscope as one of those concepts and questions brought in section B. And this is going to be everything under that is the 2025 paper on GCE exam. Of course, before we ensure that we make uh these uh relevantly answered, we're simply going to understand that is the definition of a CRO. So, a cathode ray oscilloscope is going to be a testing instrument that is used to measure and visualize electric signals as waveforms. So, it has got parts that can be given as letters yet to label.

[00:00:57]And this, of course, can be everything that we are going to face that is in an exam, provided this is one of the concepts that can be in an exam.

[00:01:07]So, of course, it says figure B8.1 shows a cathode ray oscilloscope. We've got parts labeled A, and of course, A is the control grid. And this is the part that controls the amount of brightness.

[00:01:24]And then, we've got that is part labeled B. And when we talk about part labeled B, this one is the accelerating anode.

[00:01:35]And of course, this one is going to move the electrons. And then, we've got part labeled C, which is or which are deflecting plates. So, these are Y plates, and they deflect the electron beam vertically. And then, we've got part labeled D, which are X plates, and these are going to deflect the electron beam towards the screen horizontally. So on A, name the parts labeled A and B. So A is going to be the control grid.

[00:02:09]Then for B, [clears throat] we're going to say this one is the anode. If we want, we can say the accelerating anode.

[00:02:18]Then on B, state the function of the part labeled C. So part labeled C, like I said, these are Y plates.

[00:02:27]And then these are X plates.

[00:02:31]So we're going to say um they deflect they deflect uh the electron beam.

[00:02:51]They deflect the electron beam vertically. And then C, state how electrons are produced in the cathode ray oscilloscope. So electrons in the cathode ray oscilloscope are going to be produced by a process called thermionic emission. And this, of course, is going to be a way these are going to develop.

[00:03:14]That is from the source and projected to the screen. So of course, we're going to say they are they are produced by thermionic thermionic emission.

[00:03:33]They are produced by thermionic emission process. Then D, explain why the tube of the cathode ray oscilloscope is evacuated. The tube of the cathode ray oscilloscope is supposed to be evacuated such that the electrons that can travel to the screen should not collide with air molecules. So, of course, we're going to say so as to avoid So, of course, we're going to say so as to avoid collision of electrons with air molecules.

[00:04:17]So, as to avoid collision of electrons with air molecules. So, this is what we probably need to understand. If at all we are to answer a question in the oncoming exams, either for GCE or for grade 12 in general, being a student preparing adequately with that intention to get a merit or that is a distinction for the coming exams. This has been your tutor, Mr. Sensor from Sensor Academy's Computations. Don't forget to subscribe, like, and share this video. See you in the next session. For now, it's a very good bye.