Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Class 12 Physics (India): Zener diode voltage regulator
A Zener diode can limit the voltage across it, making it a voltage regulator! In this video, let's explore how a Zener diode can be used to…
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Class 11 Physics (India): Recognizing vectors
Watch Sal figure out which of a few options could be represented by a vector. Remember that vectors have both magnitude and direction! Clas…
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Class 12 Physics (India): Electric potential charge configuration
In this video David shows how to find the total electric potential at a point in space due to multiple charges. Class 12 Physics (India) It…
VideoFree5 minutes
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Class 11 Physics (India): Inclined plane force components
Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane Class 11 Ph…
VideoFree13 minutes
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Class 11 Physics (India): Thermal expansion of ring
How much does the ring expand on heating. This is a problem that seems quite complicated, but it's actually a linear expansion problem. In …
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Class 11 Physics (India) - Hindi: Distance and displacement introduction (Hindi)
An introduction to the difference between distance travelled and displacement. Class 11 Physics (India) - Hindi To help students who prefer…
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Class 11 Physics (India): Tangent identities: symmetry
Sal finds several trigonometric identities for tangent by considering horizontal and vertical symmetries of the unit circle. Class 11 Physi…
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Class 11 Physics (India) - Hindi: Constant angular momentum when no net torque (Hindi)
Just like how linear momentum is constant when there's no net force, angular momentum is constant where there's no net torque. Class 11 Phy…
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Class 12 Physics (India): Half-life and carbon dating
Carbon dating is a real-life example of a first-order reaction. This video explains half-life in the context of radioactive decay. Class 12…
VideoFree13 minutes
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Class 12 Physics (India): Active, saturation, & cutoff state of NPN transistor
Let's explore the three different behaviours the transistor exhibits. These are pretty important for electronic engineers to design any cir…
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Class 11 Physics (India) - Hindi: Relationship between angular velocity and speed (Hindi)
How angular velocity relates to speed. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we'v…
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Class 11 Physics (India) - Hindi: Properties of periodic waves (Hindi)
Amplitude, period, frequency and wavelength of periodic waves. How to calculate wave velocity. Class 11 Physics (India) - Hindi To help stu…
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Physics: Question 1b: 2015 AP Physics 1 free response
Acceleration of two masses connected by string-pulley system. Physics Learn about the basic principles that govern the physical world aroun…
VideoFree10 minutes
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Physics: Electromagnetic field (forward vs. reverse)
Apply current in both directions and notice the response is different. Physics Learn about the basic principles that govern the physical wo…
VideoFree1 minute
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Class 11 Physics (India): Projectile motion graphs
Visualizing position, velocity and acceleration in two-dimensions for projectile motion Class 11 Physics (India) Let's learn, practice, and…
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