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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Recorded at MCKL #CambridgeALevelPhysics
9702_w17_qp12

[@Amnah_Umar]

Someone tell her she's the absolute best

[@annemiefourie9720]

Love the Bermuda wire!

[@physicsworld7218]

💕blessed to have a teacher like u

[@yejia09]

Are you from MCKL?

[@BOBO_4869]

The Bermuda wire 😂Great humour

[@saviaidres1800]

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

[@AM-uo1iq]

miss... wow.. such a good explanation

[@NochEinmal-bo8vb]

Thank you for the amazing explanation 👍

[@voyage-of-tranquility]

you're amazing and I love you guys

[@CNILOYBARUA]

Great video mam Thanks for the nice video

[@genevievesusmitha3700]

Thank you miss

[@khaulahzahid]

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

[@Syeda_Fizzah_Azeem]

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

[@ETphysics]

The current inside the wire is constant. So to maintain the same amount of charge per unit time the electrons will need to flow faster in the narrower portion.

[@arjunjain7573]

shouldnt it be A

[@bilaltaj1725]

nope as v and A are inversely proportional