Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
Vin:
--- Quote from: ambitious94 on May 26, 2010, 01:42:19 pm ---Ok, for this first u have to determine the North and South poles of the solenoid. That u have to determine by Lenz's law. Now North always has anticlockwise current right? So u simply draw the arrow for the direction of current. The Ammeter needle will deflect in the direction of the current. Simple. :) like in the case of ur diagram, it will move towards the right side, cuz htat's where the current is goin
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i get it
but the needle of the meter moves the opposite side too when the magnet is removed .. so can u explain that too ??
jellybeans:
--- Quote from: Raywin on May 26, 2010, 01:44:56 pm ---I think ur right.. :P wht does the MS tell?
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for the first one, C is marked 'vertically'(?) under/at any peak & R is marked on next to trough ... but i dont get if it cud be "on" the trough. :/
for the spectrum thing, "refraction and dispersion at first face, refraction and dispersion at second face"
holtadit:
--- Quote from: ambitious94 on May 26, 2010, 01:46:16 pm ---Thanks for this! i was just about to request the answer to it :) But one thing's bugging me. Why'd they give us the diagram of the house? Aren't those switches that are drawn in the diagram in the question...I'm gettin confused with that :)
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Those are DOORS
Fastal:
--- Quote from: ~VIN1094~ on May 26, 2010, 01:47:23 pm ---i get it
but the needle of the meter moves the opposite side too when the magnet is removed .. so can u explain that too ??
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the needle moves the opposite side because the induced current reverses, since now the left side of that coil has become the north pole to attract the south pole being put in.(remember lenz law)
Raywin:
--- Quote from: jellybeans on May 26, 2010, 01:48:05 pm ---for the first one, C is marked 'vertically'(?) under/at any peak & R is marked on next to trough ... but i dont get if it cud be "on" the trough. :/
for the spectrum thing, "refraction and dispersion at first face, refraction and dispersion at second face"
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Im clueless.. :S but i think ur right.. :)
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