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ALL PHYSICS DOUBTS - POST HERE !!

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Ghost Of Highbury:

--- Quote from: diva_sparkles on May 25, 2010, 04:42:22 pm ---its B

--- End quote ---

yes its B, because its potentiometer. thats how a circuit is drawn with a potentiometer, wait ill get a diagram for u

jellybeans:

--- Quote from: Raywin on May 25, 2010, 04:45:45 pm ---Lol.. :) the wavefront is shown (the weird line around the X) so where ever any options are NEAREST to this line is the ans.

--- End quote ---

ohhh, haha okay. thanks! ;)

Raywin:

--- Quote from: jellybeans on May 25, 2010, 04:47:13 pm ---ohhh, haha okay. thanks! ;)

--- End quote ---

Np.. ;)

MasterMath:

--- Quote from: rhea on May 25, 2010, 04:30:30 pm ---Some changes are made, one at a time.
• The d.c. supply is reversed.
• The coil is turned before switching on, so that P starts on the right and Q on the left.
• The poles of the magnet are reversed.
• The turns on the coil are increased in number.
How many of these changes make the coil rotate in the opposite direction?
A 1
B 2
C 3
D 4

--- End quote ---
Which paper is this? anyone?

holtadit:

--- Quote from: ginger on May 25, 2010, 04:43:57 pm ---hay guys
plz help me with this..............Q11 and Q32 nov 2008 paper1.....
urgent plzzzzzzzzz

--- End quote ---

Q11 =  Its dropped from 2m right ? So when it hits the ground some energy will be lost, so it cant bounce up to 2m again can it ? Ofc not.

So it has to be D.


Q32 = see below. THE red arrows represent VERY HIGH CURRENT. Only in once case the fuse blows and protects ALL the lamps.

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