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Capacitors and Capacitance - Capacitor physics and circuit operation
WEBVTT Kind: captions Language: en
00:00:06.458 --> 00:00:11.798 In a metal conductor, the positive charges of the molecules are held in place, 00:00:11.798 --> 00:00:17.515 While the negative charges of the particles are free moving. 00:00:18.659 --> 00:00:21.137 The mineral usually has an equal amount 00:00:21.137 --> 00:00:24.239 Of the positive and negative charges in its molecules, 00:00:24.239 --> 00:00:27.578 Making that metal like all electrically neutral. 00:00:28.679 --> 00:00:33.698 If we apply the power of trying to push more electrons into this metal plate, 00:00:33.698 --> 00:00:39.159 We will not succeed, because particles of similar charges repel each other. 00:00:40.436 --> 00:00:44.454 If the electrons accumulate inside the metal plate, 00:00:44.454 --> 00:00:49.900 It will repel each other and repel each other with the new electrons. 00:00:50.505 --> 00:00:52.970 So, if we apply any strength, 00:00:52.970 --> 00:00:56.136 The metal will remain electrically neutral. 00:01:01.207 --> 00:01:04.068 Now, let us assume a new scene in which another metal plate is added near the indicated plate. 00:01:10.657 --> 00:01:14.087 Once the electrons accumulate in the first metal plate, 00:01:14.087 --> 00:01:18.085 It will repel electrons on the second metal plate. 00:01:21.098 --> 00:01:27.400 Thus the positive charges of the remaining particles on the second plate will apply force on 00:01:27.667 --> 00:01:30.815 Negative charges in the first metal plate. 00:01:33.658 --> 00:01:36.116 This enables the first plate to be acquired 00:01:36.116 --> 00:01:39.166 Negative charges are more than positive charges. 00:01:42.950 --> 00:01:46.679 And as soon as we add electrons to the first metal plate, 00:01:46.679 --> 00:01:49.821 A similar number of electrons will leave the second plate. 00:01:54.420 --> 00:01:58.870 After a certain number of additional electrons accumulate on the first plate, 00:01:58.870 --> 00:02:02.440 These will repel any new electrons trying to get in. 00:02:02.940 --> 00:02:05.400 Thus, the first plate acquires a negative negative charge, 00:02:08.850 --> 00:02:11.169 It acquires the second metal plate 00:02:11.169 --> 00:02:13.908 A similar and opposite number of positive charges. 00:02:17.572 --> 00:02:22.392 We can make this equal and opposite charge on each sheet metal larger 00:02:22.392 --> 00:02:25.361 By applying greater external force. 00:02:37.140 --> 00:02:40.400 If we remove the external force that we apply, 00:02:40.400 --> 00:02:45.700 The extra electrons will continue to repel the first metal plate. 00:02:54.780 --> 00:02:57.518 And with that, we have returned to our original state 00:02:57.518 --> 00:03:00.371 Where the net charge of each plate is zero. 00:03:05.541 --> 00:03:08.589 We call these two "condensed" metal plates. 00:03:13.330 --> 00:03:17.460 Note: The tension is reversed in this video 00:03:17.460 --> 00:03:20.180 Because the blue arrows will represent the motion of the electrons. 00:03:35.452 --> 00:03:39.290 Connect the capacitor to a battery for a while as shown, 00:03:39.290 --> 00:03:42.762 The two plates will acquire identical and opposite charges. 00:03:44.400 --> 00:03:47.878 If we later came to the intense lamp, 00:03:47.878 --> 00:03:52.151 All additional electrons will move on the plate with a negative charge 00:03:52.151 --> 00:03:55.371 To the positively charged plate through the lamp. 00:04:05.760 --> 00:04:09.050 If we use several batteries connected in series, then 00:04:09.050 --> 00:04:14.079 We can force my dense plate to gain more quantities of charge. 00:04:19.992 --> 00:04:22.231 When the capacitor is shipped, 00:04:22.231 --> 00:04:26.310 Its tension will be the sum of the tensions in all batteries. 00:04:36.021 --> 00:04:39.200 The condensed charge with higher tension will make 00:04:39.200 --> 00:04:43.470 The lamp is lit for a longer period when the capacitor is discharged. 00:04:48.008 --> 00:04:51.810 Now suppose that we have increased the two metal plate areas. 00:05:01.854 --> 00:05:06.365 The added space will allow you to push additional electrons 00:05:06.365 --> 00:05:12.316 To the first metal plate, and removing electrons from the second metal plate, 00:05:12.316 --> 00:05:15.645 Without applying external force. 00:05:39.392 --> 00:05:42.830 When connecting a larger capacitor to our battery, 00:05:42.830 --> 00:05:47.059 The condenser charging will take longer on battery tension. 00:05:53.725 --> 00:05:58.165 Although the final tension remained equal to that of our battery, 00:05:58.165 --> 00:06:01.766 This tension is condensed 00:06:01.766 --> 00:06:04.785 The largest amount of charge is stored in the two metal plates. 00:06:11.165 --> 00:06:15.117 The more capacitor will take longer to empty the lamp, 00:06:15.117 --> 00:06:18.776 Condensing enables it to stay on fire longer. 00:06:26.447 --> 00:06:30.286 Suppose we added a label between the two plates. 00:06:33.596 --> 00:06:37.608 This substance does not allow any molecules to flow through it, 00:06:46.258 --> 00:06:49.597 But they contain particles that can change their direction 00:06:49.597 --> 00:06:52.326 Based on shipments. 00:06:57.921 --> 00:07:03.389 These charges apply force that draws more electrons toward the negative plate, 00:07:03.389 --> 00:07:07.048 And repel more electrons in the positive plate. 00:07:16.825 --> 00:07:20.076 The presence of this substance has the same effect 00:07:20.076 --> 00:07:23.394 Increase the area of the two metal plates. 00:07:29.807 --> 00:07:33.564 This allows the two plates to acquire larger net charges, 00:07:33.564 --> 00:07:35.997 At the same tension. 00:07:38.889 --> 00:07:41.688 When we increase the area of the two plates, or when we add this special material, 00:07:41.688 --> 00:07:46.050 We can say that we have increased intense "amplitude". 00:07:51.137 --> 00:07:55.395 There is also a third way to increase the capacitance capacitance. 00:08:05.056 --> 00:08:08.356 And by bringing the two plates closer together. 00:08:26.589 --> 00:08:29.398 Since the two plates are now closer together, 00:08:29.398 --> 00:08:32.861 They apply more forces to each other's electrons. 00:08:37.509 --> 00:08:41.009 This attracts more electrons towards the negative plate 00:08:41.009 --> 00:08:44.560 More electrons are repelled into the positive plate 00:08:44.560 --> 00:08:48.359 Allowing the plates to acquire larger net charges, 00:08:48.359 --> 00:08:50.757 When applying the same tension. 00:08:57.807 --> 00:09:01.750 And that is why the addition of the special substance affected itself, 00:09:01.750 --> 00:09:05.140 As well as increasing the areas of the two metal plates. 00:09:10.713 --> 00:09:14.115 To create the largest amplitude possible, 00:09:14.115 --> 00:09:18.183 We have to make the two plate areas as large as possible, 00:09:18.183 --> 00:09:21.642 And to add the special 'material between the two plates, 00:09:21.642 --> 00:09:24.594 And to bring the two plates as close as possible. 00:09:28.721 --> 00:09:31.853 The larger the amplitude, the greater the energy 00:09:31.853 --> 00:09:34.612 That will be stored at the same tension. 00:09:41.020 --> 00:09:43.649 You will find more information about the electrical circuits 00:09:43.649 --> 00:09:46.210 In other videos on this channel. 00:09:47.001 --> 00:09:50.426 Please subscribe to this channel to receive notifications about upcoming new videos.
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