You are Here: Home >< Physics

AQA GCSE Physics Unit 2 and 3 (20th May) watch

The Question asking you 'the wavelength of an X-ray is the same as the diameter of what' ?

I didn't have a clue, think I put a human cell, hahaha
Atom
2. 2 P3 Question what i wrote?

For motor question, i wrote,

When switched is closed, this completes the circuit, therefore a current flows through the wire, hence create a magnetic field across the wire, this magnetic field interacts with the magnetic field of the magnets, causing a resultant force, hence XY experience a force.

Then it was a virtually up arrow for FLHR.

and the effect was: motor.

The toothbrush was an application of transformers/ electromagnetic induction.

Basically an alternating current constantly changes the magnetic field of the iron core which is felt at the secondary, because the changing MF constantly cuts the coil, hence therefore induce an alternating potential difference at the secondary, hence alternating current.
3. (Original post by camz01)
What's the explanation for the 3 mark about the coil moving in p3
I put that the current flowing through the wire cases a magnetic field (concentric circles) this magnetic field cuts through the magnetic field caused by the two magnets, this causes a force.
But I think you might have had to put it cuts through at a 90 degree angle?
4. What direction was the arrow supposed to be in for the motor effect question

Posted from TSR Mobile
5. (Original post by a.zed)
Yeah. I'm pretty sure it was
it was 100% atom
6. (Original post by Hollie1903)
I put that the current flowing through the wire cases a magnetic field (concentric circles) this magnetic field cuts through the magnetic field caused by the two magnets, this causes a force.
But I think you might have had to put it cuts through at a 90 degree angle?
I put:
Current flows so magnetic field, the wire cuts through the magnetic field and so a force is produced. I didn't put at 90 degrees so will I still get 2/3 of the marks?
7. I got atom as well-it was on my textbook

Posted from TSR Mobile
8. x ray has a diameter of an atom right??
9. (Original post by Star1015)
What direction was the arrow supposed to be in for the motor effect question

Posted from TSR Mobile
I put down
it was 100% atom
Yeah, I'm starting to feel a lot more confident.

The biology and chemistry papers were awful, it's kind of freaking me out that physics was easier
11. [QUOTE=Fisabilillah;56020811]I got 3.6

Posted from TSR Mobile[/QUOTE
I got 12!
12. What did you all get for the last equation?
13. (Original post by Star1015)
What direction was the arrow supposed to be in for the motor effect question

Posted from TSR Mobile
I put up?
14. what were the answers to the calculations? I did so badly in them all
15. (Original post by Hollie1903)
I put up?
Same but now I think it was down because all my friends put down
16. (Original post by AmyRevises)
what were the answers to the calculations? I did so badly in them all
For p3? These are what I got: 0.25, 1.52, 84000, 0.05 (This one is definitely wrong, the answer was 50 apparently) and 18.

Can't remember the questions but they are the numbers I got!
17. (Original post by camz01)
P3 was the answer motor effect or induction? Because the wire was cutting through the magnets but it said 'effect' ?

I wrote motor effect
18. I misread the rocket question and thought it was a real rocket so I thought my height was wrong and made one up (
19. I found p2 hard and p3 way too easy

Posted from TSR Mobile
The Question asking you 'the wavelength of an X-ray is the same as the diameter of what' ?

I didn't have a clue, think I put a human cell, hahaha
An atom I think? I guessed it

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: August 23, 2015
Today on TSR

Are you living on a tight budget at uni?

From budgets to cutbacks...

University open days

1. University of Edinburgh
Sat, 22 Sep '18
2. University of Exeter
Sat, 22 Sep '18
3. Loughborough University