help A2 physics

suppose you pushed a magnet into a coil of wire. this induces a current in the wire due to a change in the magnetic field of the wire

but this current induces its own magnetic field - suppose this magnetic field acted to pull the magnet in even faster - then this scenario happens



clearly energy is being created for nothing here - so that violated conservation of energy. - therefore the induced current must oppose the change in magnetic field caused by the moving magnet.

basically the direction of the induced current is in a direction that induces a magnet field opposing the original change. - you can find the direction using the left hand or right hand rule, i cant rememberwhich

so the magnet goes through the coil normally

^^^ ahhh makes things much clearer jazakallahu khair brother

I don't do physics, I'm quite horrible at it but I thought I'd give you a site I usually go on which is really popular among UK students.
The Student Room
^ There's so many sections, from A-Levels to Unis etc and of course degrees, subjects (in your case Physics), and there's even a Islamic Society

^^^ jazakallahu khair sis the spec that im doing theres no revision site for it inshallah this will b useful =)

lol. it remind me of college days. i love sciences esp physics.

format_quote Originally Posted by tigerkhan

lol. it remind me of college days. i love sciences esp physics.

no way i mean physics is interesting some of the times, i only like particle physics and mechanics unfortunately not enough of these topics in my syllabus, my fav science has to be chem and human biology so much more interesting

format_quote Originally Posted by GodIsAll

Physics gives me dain bramage.

I believe you meant 'Brain damage'..

^^^lol

its not too hard actually, i actually like the maths stuff hehe find it easier it depends on what spec your doing im doing AQA Physics B (which has less maths) but not many people do that spec but i think id prefer doing physics A in my opinion physics is secound hardest a level science

format_quote Originally Posted by GodIsAll

I had to suffer through a 5 hour physics course during undergraduate from my BS in Biochem.

you had to do physics in biochemistry :/ i thought it was just biology and chemistry i was panning to do it but changed my mind