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P1 CIE physics doubts

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sweetie:
Q33 plz of the same year may07

nid404:
still not gotten it?

ok wait...i'll get back in a while

nid404:
in a parallel circuit voltage remains constant

In the first wire(resistors are in series), the 2 resistors have the same value, so voltage splits equally...V1= 2/2=1 V  [voltage splits in series]
In the second wire, voltage splits according to ratio of resistance...V=IR (directly proportional) ...so in the 3 ohm resistor it would be 3/5 X2=1.2V  (since total R=5...ratio is 3/5)

V1-V2= 1-1.2= -0.2

sweetie:
Q10, 22,30 and 40

Thank You ;D

nid404:
Q 10) acceleration of the blocks is constant
the block has a Force= 4ma
F is directly proportional to m
X uses only 1/4 of the force to acc
3/4 of the force will be applies on Y...for both the blocks to move toether, hence D  (acc is constant)

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