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Because Cell A is charging Cell B and whenever a cell is charging we add both the e.m.f's .
According to lenz's law, emf tends to oppose the change causing it, so here, sketch will just have opposite peaks, and when current is constant, no emf on sketch, since no emf is induced when there is no change
This question can be solved using parallelogram rule.Number 1 part (b)
i don't understand how to draw this current vector diagram and unable to resolve. pls help
a vector diagram will be appreciated.
Thanks
Refer this : https://www.xtremepapers.com/commun...st-your-doubts-here.9860/page-632#post-883149http://freeexampapers.com/A-Level/Physics/CIE/2012-Jun/9702_s12_qp_23.pdf
Question 2 c
How exactly should the graph look like?
Can someone please draw it?
The attached file is how i thought it would (the lines are meant to be straight )
But the mark scheme says that the gradient of the negative is less steep or something so how should it look like?
http://freeexampapers.com/A-Level/Physics/CIE/2011-Jun/9702_s11_qp_23.pdf
Question 6 part iv
Why is it a straight line through the middle :O how??? please explain!
1) 0.02/0.5 * 100 = 4%question 1(b)
the diameter of the wire is found to be 0.50 + or - 0.02mm.Calculate % uncertainty in
(1) the diameter
(2)the area of cross_section of the wire
Which book is that? Is it like a revision guide or work book? and if so is it helpful?Hey.. The equation states r(^2) but they didn't include it in the calculation.... that always seems to be the case in other problems as well. Can someone please explain this to me? Thanks!
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