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ALL PHYSICS DOUBTS - POST HERE !!

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Raywin:

--- Quote from: Baladya on May 25, 2010, 05:04:58 pm ---Current is going from + to -. And so current is gonna go in one side (and this is S) and the come out from (N)

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Ohh got it.. :) but is tht a rule or something?

Ghost Of Highbury:

--- Quote from: Raywin on May 25, 2010, 05:03:29 pm ---But how do u noe which is north and which is south? :s

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Check the diagram same post

diva_sparkles:

--- Quote from: Baladya on May 25, 2010, 05:00:50 pm ---And also plz explain how radioactivity is used in fire alarms

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dont think its in da syllabus!!!

Baladya:

--- Quote from: Raywin on May 25, 2010, 05:06:28 pm ---Ohh got it.. :) but is tht a rule or something?

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Actually its based on a rule that i cannot explain because its hard and very long. But if anyone can link plz...  It has to do with the magnetic effect of a current and how that if two coils are together the magnetic field will interact and bla bla

Vin:

--- Quote from: 8T on May 25, 2010, 05:00:23 pm ---Thanks for pointing it out :)
Help with M 05 q 36? www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf

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u got 32 right ..??


Q 36) Ok if u see on both the rods the coil is wrapped around is exactly similar so the poles forming on the right side and the left side would be opposite

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