PHYSOCS-ALEVELS-MCQ HELP-JUNE 2015 IAL...HELP plss...JAN EXAMS
https://pmt.physicsandmathstutor.com/download/Physics/A-level/Past-Papers/Edexcel-IAL/Unit-4/June%202015%20(IAL)%20QP%20-%20Unit%204%20Edexcel%20Physics%20A-level.pdf
MCQ
5)... the answer should be C but I'm getting B
also for mcq 8 ..for curves like shown in the diagram..is there a gradient at 0?
MCQ
5)... the answer should be C but I'm getting B
also for mcq 8 ..for curves like shown in the diagram..is there a gradient at 0?
5
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
Original post by BobbJo
5
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
I'm a nonmath student...this thing doesn't make sense to me that there will be a non zero value of the gradient at (0,0)
but i got mcq 5
Original post by BobbJo
5
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
E = 1/2 CV^2
same amount of energy so C is inversely proportional to V^2
500 x V1^2 = 50 x V2^2
V1^2/V2^2 = 50/500 = 0.1
hence C
8
Yes graph of magnetic flux vs time has a non-zero gradient at t =0
so emf should not start at 0
gradient is increasing so emf is increasing
hence B
I'm a nonmath student...this thing doesn't make sense to me that there will be a non zero value of the gradient at (0,0)
but i got mcq 5
Original post by MARYAM1234567
I'm a nonmath student...this thing doesn't make sense to me that there will be a non zero value of the gradient at (0,0)
but i got mcq 5
but i got mcq 5
If you draw a tangent at t=0, it is not horizontal
It has a positive gradient
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