Just get your end of the year homework for High School Physics, OP?

>>674542031
A level physics and stuck I don't get parallel circuits I can do it in series can you explain how to do parallel please

jesus christ, it already gives you voltage and current for one of the lamps. mesh analysis or nodal, i have no idea which would be easier, but either is a fucking cake walk with only three unknowns. fucking childs play to solve a system of three equations. drop out of school you worthless shit

File: DSC_0016.jpg (3 MB, 3840x2160) Image search: [Google]

3 MB, 3840x2160

>>674542433
I've done this so far

>>674542547
>>674542433
Isn't right?

>>674542300
1/v=1/iR1+1/iR2

>>674542963
But what is R1 and R2 there unknown

>>674541895
you are missing information on lamp one. the problem states the resistors are chosen so it operates at its rated voltage, but doesn't give any info on its voltage and currant ratings.

>>674541895
do your homework alone faggot

>>674543416
That's where I'm stuck at the moment idk if I should use the stats for lamp 1 for lamp2

>>674542300
This isnt a level physics, its gcse
>OP is 16

Nodal voltage analysis or current mesh.

Will not help because no one helped me when i had shit similar to this negro

>>674543680
>op is 18 in year 13

>>674543872
>op is retaking gcse physics in year 13

File: 1457171859774.jpg (29 KB, 640x360) Image search: [Google]

29 KB, 640x360

>>674542300
You're not fooling anybody you underage faggot.
This shit is not difficult. You're either baiting or confirmed retard.

File: DSC_0017.jpg (3 MB, 3840x2160) Image search: [Google]

3 MB, 3840x2160

>>674543983
Here is my chem textbook

>>674544044
op proves not underage

>>674543721
fuck negroroni, this shit isnt even at that level. fuckin ohms law is all you need.

OP you're missing info for lamp 1. You can solve it but you'll get many values for Ra and Rb

OP confirmed retard. Talk to your teacher like a fucking adult, or read your textbook

>>674541895
Dropout of school you autist

>>674544471
>this
This is my problem I can use ohms law to solve but I don't have enough data I was wondering if anyone knew any formula to get the missing data

>>674544079
Chemistry? Electricity is physics? WTF?

>>674544471
then express your answers as equations with Ra and Rb as unknowns. and assume the circuit is a spherical mass and the pulleys are frictionless

>>674544661
I know I don't have physics textbook to hand it was to prove Alevel

File: light.jpg (4 KB, 224x225) Image search: [Google]

4 KB, 224x225

>>674541895

>>674544837
Kek

>>674544837
Ni kek

>>674541895

ITT: Bunch of mouthy cunts spouting words they heard in physics once, but who also cannot solve the problem.

>>674544961
/Thread

>>674544471
>>674543416
winwar winwars
missing info for lamp one makes it unsolvable. assuming same stats as lamp two puts no voltage drop across rb, making 0 ohms. voltmeter reading 6 volts. assuming infinite impedance on the voltmeter that puts 6 amps through ra with a 9v drop. so 1.5 ohms. no mesh or nodal analysis required.

>>674541895
>do my homework /b

6v/3a=2ohms
voltmeter = 6v

115-6= 109V over A

109/3= 36ohm

Yeah problem seems to not work because no way to work out branch currents...i don't think

>>674545500
fuck the one time i didnt check them i get double dubs. why my karma shit. am i a bad person?

>>674545500
Checked

>>674545664
its 15V the other "1" you think of is from the battery symbol

If lamp2 is 6V 3A it is 18W (P=U*I) so if you want lamp1 to take the same amount of power you can make RB = 1ohm (3V and 3A)
then you have UA = 15V - (UB+Ulamp2) = 6V
Ulamp1 = 15-Ua = 9V IF lamp1 is also 18W you have a current of 2A trough it which makes Itotal = 5A (3A from lamp2+RB)

I don't know if the lightbulb will like it but that is all i can come up with now

>>674546214
forgot RA = 6V/5A

>>674546214
>this

>>674546759
>>674546214
Wrongo. Cause you can still have multiple answers such as:

Lamp 2: 8V, 2.25A, 18W
Ra = 1.33ohms
Rb = 0.667ohms

And an infinite more number of answers

>>674547610
Correction I meant lamp 1

>>674547610
I can confirm that, arrived independently at the same solution

>>674547610
I know.

We can't know 100% unless OP gives us more information on the lamps. If both have to have 6V thane RB has to be 0 but...

File: 1457861289783.png (119 KB, 400x400) Image search: [Google]

119 KB, 400x400

>>674547610
>Wrongo

>>674548974
whats so funny, friendo

File: 1457833873375.jpg (11 KB, 225x225) Image search: [Google]

11 KB, 225x225

>>674549220
>friendo

>>674549325
arigato

File: 1443577780899.jpg (94 KB, 400x400) Image search: [Google]

94 KB, 400x400

>>674549896
you got me there my friend, congratulations!

>>674541895
You serious nigger ?
If you can't do this just drop out of school