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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Physics: Loop de loop answer part 1
Figuring out the minimum speed at the top of the loop de loop to stay on the track Physics Learn about the basic principles that govern the…
VideoFree6 minutes
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Class 12 Physics (India): Energy of a capacitor
This video explains the potential of a capacitor and how they function in a circuit. By David Santo Pietro. Class 12 Physics (India) It is …
VideoFree6 minutes
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Class 11 Physics (India) - Hindi: Total final velocity for projectile (Hindi)
Calculating the total final velocity for a projectile landing at a different altitude. Class 11 Physics (India) - Hindi To help students wh…
VideoFree11
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Electrical engineering: Inductor equations
We look at the inductor i-v equations in derivative and integral form. Electrical engineering Learn about electricity, circuit theory, and …
VideoFree13 minutes
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Class 12 Physics (India): Current direction
The positive sign for current corresponds to the direction a positive charge would move. In metal wires, current is carried by negatively c…
VideoFree5 minutes
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Electrical engineering: Inverting op-amp
We analyze the inverting op-amp configuration, doing all the algebra from first principles. Electrical engineering Learn about electricity,…
VideoFree13 minutes
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Electrical engineering: Labeling voltages
Labeling voltages on a schematic is not a matter of "right" and "wrong". It simply establishes how the voltage appears in the analysis equa…
VideoFree11 minutes
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Electrical engineering: RC natural response - derivation
We derive the natural response of an RC circuit and discover it has an exponential form. Electrical engineering Learn about electricity, ci…
VideoFree11 minutes
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Electrical engineering: LC natural response intuition 2
We can predict the shape of voltage and current in an LC circuit by tracking the motion of charge as it flows back and forth. Electrical en…
VideoFree10 minutes
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Electrical engineering: What is inside a hair dryer? (1 of 2)
In this video we explore ground fault interrupt circuits and how they keep us safe. Electrical engineering Learn about electricity, circuit…
VideoFree6 minutes
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Class 12 Physics (India): Curved surface refraction formula
Let's derive a formula connecting object distance (u) and image distance (v) for refraction at a curved surface. Class 12 Physics (India) I…
VideoFree13
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Electrical engineering: What is inside a tap light?
In this video we go inside a tap light to discover what is inside and how it works. Electrical engineering Learn about electricity, circuit…
VideoFree6 minutes
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Electrical engineering: IR sensor
In this video we connect, bend and wire Bit-zee's IR sensor. This sensor will allow Bit-zee to receive commands from a universal remote con…
VideoFree2 minutes
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Class 11 Physics (India): Worked example: matching an input to a function's output (equation)
Sal finds the input value for which f(t)=13, given that f(t)=-2t+5. Class 11 Physics (India) Let's learn, practice, and master topics of cl…
VideoFree2
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Electrical engineering: Secure and wire the motors
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree4 minutes