AQA Physics PHYA4 - 20th June 2016 [Exam Discussion Thread]

5ms^-1

Hope it helps!

i think it's B too, but is this the right answer?

It asked for time constant, RC

Was -45/ln(0.8) involved at all in that question?

What would 54 to 58 marks be?

for the first capacitor question on the written paper, were we supposed to find the gradient or area?

How many people managed to do the derivation? It seemed like one of the hardest parts of the paper

Was -45/ln(0.8) involved at all in that question?

thanks, what was the question/solution? I cant remember and now it makes me paranoid haha

Yes I got these, the transformer was repeat from another year wasn't it
I can't remember off top of my head but if you ask I might remember. I got C^2kg^-1 as the EG one is all I remember lol

You might get a mark but I couldn't tell, because this was a new question

I did it but I don't think anybody else got it at my school

It was ln0.2

Was -45/ln(0.8) involved at all in that question?

A decent mid A grade. Good job. I think I got 51-54. I really messed up on the graph, proof and the electromagnetic brake question :/

That's good, the six marker was very simple so they had to make it harder in some way, so glad I managed it

I got C^2kg-2 for the ε0G unit

For the MC question with 8 graphs (picking the two for charging a capacitor I believe? with C/V on one y-axis and I (Current) on the other? I put the one with the C/V graph going up but the rate decreasing exponentially and the amplitude graph going down exponentiall (Becuase I think current always decreases with capacitors) Is this right?

For the MC question with 8 graphs (picking the two for charging a capacitor I believe? with C/V on one y-axis and I (Current) on the other? I put the one with the C/V graph going up but the rate decreasing exponentially and the amplitude graph going down exponentiall (Becuase I think current always decreases with capacitors) Is this right?