Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; plgContentJComments has a deprecated constructor in /var/www/astarmathsandphysics/plugins/content/jcomments/jcomments.php on line 25 Call Stack: 0.0003 362352 1. {main}() /var/www/astarmathsandphysics/index.php:0 0.0982 1213272 2. Joomla\CMS\Application\SiteApplication->execute() /var/www/astarmathsandphysics/index.php:49 0.0982 1213272 3. Joomla\CMS\Application\SiteApplication->doExecute() /var/www/astarmathsandphysics/libraries/src/Application/CMSApplication.php:267 0.1722 4112216 4. Joomla\CMS\Application\SiteApplication->dispatch() /var/www/astarmathsandphysics/libraries/src/Application/SiteApplication.php:233 0.1735 4139960 5. Joomla\CMS\Component\ComponentHelper::renderComponent() /var/www/astarmathsandphysics/libraries/src/Application/SiteApplication.php:194 0.1742 4157672 6. Joomla\CMS\Component\ComponentHelper::executeComponent() /var/www/astarmathsandphysics/libraries/src/Component/ComponentHelper.php:356 0.1742 4174680 7. require_once('/var/www/astarmathsandphysics/components/com_content/content.php') /var/www/astarmathsandphysics/libraries/src/Component/ComponentHelper.php:381 0.1750 4182416 8. ContentController->execute() /var/www/astarmathsandphysics/components/com_content/content.php:42 0.1750 4182416 9. ContentController->display() /var/www/astarmathsandphysics/libraries/src/MVC/Controller/BaseController.php:710 0.2231 4417192 10. ContentController->display() /var/www/astarmathsandphysics/components/com_content/controller.php:113 0.2245 4434592 11. Joomla\CMS\Cache\Controller\ViewController->get() /var/www/astarmathsandphysics/libraries/src/MVC/Controller/BaseController.php:663 0.2250 4455520 12. ContentViewArticle->display() /var/www/astarmathsandphysics/libraries/src/Cache/Controller/ViewController.php:102 0.2341 4522968 13. Joomla\CMS\Plugin\PluginHelper::importPlugin() /var/www/astarmathsandphysics/components/com_content/views/article/view.html.php:189 0.2341 4523224 14. Joomla\CMS\Plugin\PluginHelper::import() /var/www/astarmathsandphysics/libraries/src/Plugin/PluginHelper.php:182

The Potential Difference Between Points in a Simple Electric Circuit

In a simple electric circuit where every device is in series or parallel with every other devoice in an easily identifiable way it is often quite simple to find the potential difference between any two point.

We can use the simple facts that for resistors in series the voltage splits across each component in proportional to the resistances, while the voltage across each parallel circuit is the same.

Across the upper part of the parallel circuit above – the resistorsand– the voltage splits in the ratioor 6:3:3.

The voltage at A is 0V so the voltage at B is 6V, the voltage at C is 6+3=9V and the voltage at D is 12 V (D is directly connected to the positive terminal).

Across the lower part of the parallel circuit above – the resistorsand– the voltage splits in the ratioor 1.5:4.5:6.

The voltage at A is 0V so the voltage at E is 1.5V, the voltage at F is 1.5+4.5=6V and the voltage at D is 12 V as before. The voltages at each point are shown below.

>

The potential difference between B and E is 6-1.5=4.5V.

The potential difference between C and F is 6-1.5=4.5V.

Other potential differences can be found as simply.