OCR B Physics H157/01 Fnd in Physics 24th May 2016
OCR Physics B 24th May 2016
NB: This is not OCR Physics A.
Revision ResourcesNB: This is not OCR Physics A.
PhysicsNet
Particles & Radiation
Electromagnetic Radiation & Quantum Phenomena
Waves
Mechanics
Materials
Current Electricity
Physics and Maths Tutor
This is excellent, there are revision notes, summary sheets, questions from past exam papers separated by topic and other worksheets.
Module 1: Practical Skills in Physics
Module 2: Fundamental Data Analysis
Module 3: Physics in Action
Module 4: Understanding Processes
OCR Resources
Sample Paper
Specification
If anybody has access to the practice paper that they haven't released publicly, I think it would help people if they were posted.
(edited 7 years ago)
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How did people find that?
Posted from TSR Mobile
Posted from TSR Mobile
Original post by danigr
much easier than the sample paper, it found it quite nice. How did you calculate the force in the collision?
Agreed. I found the total momentum in the question before and divided by time
Posted from TSR Mobile
That was proper solidthat liark
Specimen paper was piss compared to that
Specimen paper was piss compared to that
I thought it was aite 👍 harder the one of the specimen papers but easier than the other
Might have scraped an E, gonna have to ace the depth exam
Original post by Lion_E
Did anybody get the 4 mark diode question towards the end? Wtf
I just evaluated it.
I had no time to do any calculation so I just talked about how the diodes would be used to dissipate additional power in the circuit.
Original post by danigr
In the question about the diods, how could you estimate the current?, I got first an estimate for the resistance of the diod (0.7) and then V=I/(R+0.7)
Can't remember but I got 12.5 ohms for the fixed resistor😁
Original post by Watevaidc
Can't remember but I got 12.5 ohms for the fixed resistor😁
Yes, 12.5 ohms
Original post by Lion_E
Did anybody get the 4 mark diode question towards the end? Wtf
Apparently didoes only let current travel in one direction i didnt know that until after the exam...
I said the current would be higher in the diodes and not in the ammeter and did some calculations i just guessed.
(edited 7 years ago)
Original post by danigr
Yes, 12.5 ohms
To get the resistance of the diode I drew a triangle to get the gradient of the diode and then did 1/gradient to get the resistance (because the graph was I/V)
12.5 ohms for what?
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