Edexcel IAL Physics Unit 3 WPH03 May June 2016 Discussion

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33 +- 1 in my opinion. I wonder if I'll grab an A, a B is for sure though.

I'm thinking around 32 or 33 not any higher than that.Chances are looking pretty good for a B but yes you can never be sure about an A.

Reply 121

iWant.A

Original post by Owais.ik

Yes Thats correct

and for the question to determine the refractive index we should have said plot a graph of sin i on the y-axis against sin r on the x-axis and the gradient will be the refractive index

Reply 122

Owais.ik

Original post by iWant.A

and for the question to determine the refractive index we should have said plot a graph of sin i on the y-axis against sin r on the x-axis and the gradient will be the refractive index

Yes (Y)

Reply 123

afridi010

anyone else got a gradient of 3.91? :/
thank god there's ECF, without that, i wouldve gotten a zero for the resistivity question

Reply 124

OnTheHorizon

Original post by afridi010

anyone else got a gradient of 3.91? :/
thank god there's ECF, without that, i wouldve gotten a zero for the resistivity question

If you are who I think you are then No

Reply 125

don't cry-craft

What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.

Reply 126

Maryam hosni

i got my gradient as 5.7 and resistivity as 4.7*10-6
do you think my values will be in the range given?

Reply 127

joose_99

Original post by Maryam hosni

i got my gradient as 5.7 and resistivity as 4.7*10-6
do you think my values will be in the range given?

I don't think so, but they'll probably give you the marks if you have done the correct calculation for resistivity

Reply 128

OnTheHorizon

Original post by Maryam hosni

i got my gradient as 5.7 and resistivity as 4.7*10-6
do you think my values will be in the range given?

Sadly I don't think so :frown:

as most of the people wrote between 4.5 and 5 for gradient even below 4.5 I'm not sure but I don't think 5.7 is gonna cut it.For resistivity you might get method marks but the answer was 1.xx*10^-6 not anymore than a 1.

Reply 129

Hamadtype-

Original post by don't cry-craft

What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.

I wrote variable resistor to keep the current constant

Reply 130

SAM RR

I got
Gradient =5
Resistivity = 1.23 x 10^-6

Reply 131

IAROX15

Original post by Hamadtype-

I wrote variable resistor to keep the current constant

same

Reply 132

mira99

who's taking bio chem phy and math ??

Reply 133

MrBioBombastic

Original post by mira99

who's taking bio chem phy and math ??

me but im not taking maths

Reply 134

MrBioBombastic

Original post by OnTheHorizon

Sadly I don't think so :frown:

well all from 4.5 to 5.5 are correct

Reply 135

ToxicPhantom007

Original post by don't cry-craft

What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.

Umm.. with this way you could just read off the current and you won't MAKE it constant ryt ? What if the ammeter reading isn't constant :V
I wrote that use a variable resistor