Skip to Content Go to sign in Skip to Primary Navigation Skip to Secondary Navigation Skip to Page Navigation Skip to Header Navigation Skip to Footer Navigation Read more about accessability options and our navigation

Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

Return to screen reader navigation
Home Concept Builders Electric Circuits Which One Doesn't Belong? - Equivalent Resistance Directions

Which One Doesn't Belong? - Equivalent Resistance - Directions

Using the Which One Doesn't Belong? - Equivalent Resistance Concept Builder is quite simple. There are three different activities, but every question in every activity poses the same challenge - to determine which one of the circuits has an equivalent resistance that is not equal to the others. You must inspect the given diagrams and identify the one that displays a circuit having a different equivalent resistance. Tap on that circuit to select it. Once a circuit is selected, the Check Answer button appears. If you change your mind, you can tap on the selected circuit a second time to deselect it or you can tap on a different circuit. As long as one diagram is selected, the Check Answer button will appear. Once you are satisfied with your answer, tap on the Check Answer button. Your answer will be evaluated and your Progress Report will be updated.

Your goal is to earn "Stars" and to complete one or more activities. Stars are earned when you show success on a particular question. Once you show success on all the questions for a particular activity, you will earn the Trophy for that activity.

Concept Builder Teacher Notes