9.1b Ex1 ON17 P12 Q33 Ratio of Drift Speed | AS Electricity | Cambridge A Level 9702 Physics

Example 1 - 9702/12/O/N/17: Two copper wires are joined together and carry a current, as shown. Wire P has diameter d and wire Q has diameter 2d.
What is the ratio of average drift speed of electrons in the wire P over wire Q?
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9702_w17_qp12

[Amnah_Umar]

Someone tell her she's the absolute best

[khaulahzahid]

why is the cross sectional area pi dsquare/4 but in prev video it was Pi r suqare

[saviaidres]

I love you Ms, Thank you sooo much!!!

[voyage-of-tranquility]

you're amazing and I love you guys <3

[NochEinmal-bovb]

Thank you for the amazing explanation 👍

[CNILOYBARUA]

Great video mam Thanks for the nice video

[Syeda_Fizzah_Azeem]

isn't area of wire directly proportional to current? So the narrower the wire, the SLOWER the electrons