Potential Dividers - IB Physics

A potential divider is any circuit that is designed to divide the voltage by a specific amount. In IB physics potential divider problems usually ask you to choose a resistance for one part of the circuit so that a different part receives a desired voltage.

0:00 Variable Resistors and Potentiometers
1:43 Example 1
4:42 Example 2

[wrentay]

love the video, i can already imagine an impossible ib question based off of the variable resistor 😭

[azmatullah]

Explains the rheostat as well with numerical problem
Good Job

[cherylhli]

Thank you so much! As always, your videos are really helpful! I just wanted to check, at 2:08, is it "...to give the light bulb 9V"? Thank you!

[alex_xx.]

4:28 How did you get 2.4 for the resistance of the variable resistor I keep getting 1.5

[Festus]

@0.50sec, you say " 2 non- potentiometer resistors" but in the image on the right, you show 3 non-potentiometer resistors. n we think of R2 as a Load resistance in parallel with half of R1?

[temmiedrago]

I dont think the animation at 1:43 is actually playing.

[thomasbeaudet]

Hello, in reference to 2:40, how is "1/Req = 1/4Ω + 1/R = (4Ω+R)/4ΩR" ?

[GinaMathew-rwxe]

Love you the video thank you so much for helping me. 🙏🙏