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27)in q27 why is the polarity of the charge negative??
POSTED IT THOUSAND TIMESq27 plzzzz?
i know its a simple question but.........didnt get it
thanks but i asked for q27. it doesnt even need explanation but i would be glad if u could give one.
8702 ?? CIE ?in q2 why is the answer C and not D??
in Q31 why is the ans D and not C?
IN q38 how do we know whether the speed of the electron will increase or decrease?
Suchal Riazin q2 why is the answer C and not D??
in Q31 why is the ans D and not C?
IN q38 how do we know whether the speed of the electron will increase or decrease?
better do chemistry papers today
But solve this ._.better do chemistry papers today
28)
Thanku so much! God bless you28)
28 the charged particle moves with a displacement perpendicular to the direction of the force
when the force and the displacement are perpendicular to each other, the workdone is 0
F cos (90) x distance = 0
32)
Where R will be lowest Ammeter readings would be highest
D is answer
34)
All the power in the battery is dissipated in the resistors respectively.
12 = I^2R + (I/2)^2R + (I/2)^2R <the current in the parallel resistors is halved as they are identical)
12 = I^2R + (I^2/4)R + (I^2/4)R
12 = 1/2(2I^2R + I^2R)
24 = 3 I^2R
8 = I^2R
the power dissipated in R is (I^2/4)R
1/4 of 8 is 2W
Impulse = m(v - u)
Change of momentum = m(v-u)
ZaqZainabin q2 why is the answer C and not D??
in Q31 why is the ans D and not C?
IN q38 how do we know whether the speed of the electron will increase or decrease?
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