Section I - Multiple Choice (6 Viewers)

[freeeeee]

Re: General Thoughts: Physics

WRONG! pretty sure 5 is D, didn't read ur other answers

P type is group three...

 

[Sindivyn]

I had 5C and 7B

 

[EinstenICEBERG]

Re: General Thoughts: Physics

This lol

it was D right? cuz that was the cloest one.. but it EXCLUDES ALL magnetic field not some.. so fked up

 

[lemon1]

4? 4 IS A LOT!!!!
Multiple choice was the hardest section for me...

Yes i know but it doesn't mean i got them wrong

Could someone please scan the test? I'd really like to look over it!

 

[Demise]

I had 7B as well.

 

[oh well]

fahk

 

[cartoonmaiz]

Re: General Thoughts: Physics

Umm wasnt emf graph d because induced emf is opposite... or something like that

 

[machine2035]

Re: General Thoughts: Physics

Umm wasnt emf graph d because induced emf is opposite... or something like that

Thats what I did (-cosx)

 

[freeeeee]

Re: General Thoughts: Physics

Umm wasnt emf graph d because induced emf is opposite... or something like that

ye your right dam, i put B, didnt think of that

 

[machine2035]

Umm isn't 8 A... The conductor is at 90deg to the field (its going into the page).. I swear I saw this trick from a past paper a few years back.

 

[nicholash747]

Umm isn't 8 A... The conductor is at 90deg to the field (its going into the page).. I swear I saw this trick from a past paper a few years back.

Yes but what did you take for your length of the wire?

 

[machine2035]

Yes but what did you take for your length of the wire?

0.2/Sin30

 

[oh well]

Umm isn't 8 A... The conductor is at 90deg to the field (its going into the page).. I swear I saw this trick from a past paper a few years back.

u use sin ratio to find the length of the conductor mate ,

 

[oh well]

0.2/Sin30

yep this :L

 

[chriss95]

I had 7B as well.

pretty sure 7 is A. radial magnetic field is just for constant torque

 

[nicholash747]

yep this :L

What did you get for 8? and how did you calculate it

 

[machine2035]

For question 8.

Very similar to one from 2006 except it was current, not force.

Look at answer. Doing it like that you get B as I answered.

 

[oh well]

pretty sure 7 is A. radial magnetic field is just for constant torque

YES! Thanks for supporting me mate!

 

[oh well]

What did you get for 8? and how did you calculate it

you find the length of wire and then use F=BILsin 30 to find the I

 

[nicholash747]

I got D for 8..

I = 0.03/(0.05*0.2sin(30))
ignored sin 90