Total power consumed ?

The total power consumed by two resistors, connected in parrellel, is 50watts if the applied voltage is 10volts dc and the current thought one resistor is 3 amperes what are the resistances of the two resistors ?
How do you calculate it ??

P=(v^2)/R then use kirchoff current divider formular to get the current of each resistor then you can obtain the value easily

As the resistances are in parallel the equivalent resistance is R= R1*R2/(R1+R2)
and also the current in one of the resistance is 3 amps so , say if that resistance to be R1 then R1=V/I=10/3.
So substitute R1 in R and also the power dissipated is 50 watt ,
So P= V*R = 10 * (R1*R2/(R1+R2)) = 10 * ((10/3) *R2/((10/3)*R2)) = 50W , thus you get both R1 and R2.

Hope this helped.

On eresistor is 3.333Ohm and the other is 5Ohm
To get 50W at 10V you need to have 50/10=5A. One resistor is 3A then the other must have 2A.
R=U/I that gets you the 2 resistors.

With greatest respect to everyone, I think that Richard (who is an apprentice electrician) will derive far greater benefit if he does his own homework, rather than getting other people to do it for him.

Richard, do your own coursework. You have been taught the principles in class, and you have a textbook to revise them if you need to. If you don't do the work yourself now, you fail your exams.

Are you sure that you give the equation P=V*R? I don't think so. If you want to obtain the resistance from power equation, the proper equation is P = (V^2) / R or you can use another equation, R = (V^2) / P.

Yeah man you are right!! I was wrong with the equation. P= V*I and P=V^2/R), yet the concept remains the same instead of P=V*I we have to substitute inR = (V^2) / P.

Thanks all,
Hi frank
I'm not an apprentice yet, I am working in a completely different industry I am doing the course via correspondence. if I send my teacher a question i have to wait about 3-4 days for a reply or I can come on here ask a question and I can read all the views / replys that people have left for me. I find this a better way to understand the topic then wait for days for my teacher to get back to me.

Hi Richard, thanks for your message.
Please forgive me if I have misunderstood you. It's just that quite regularly on this forum, it does appear that some electrical engineering students will just cut and paste in their coursework questions !
All the best, Frank.

Here are a few useful instructional sites:

http://www.satcure-focus.com/hobby/index.htm - Useful ideas tutorials circuits links etc

http://www.allaboutcircuits.com - online textbooks covering electricity and electronics

http://electronics-for-beginners.com/links.php

http://openbookproject.net/electricCircuits/

http://www.ecelab.com/index.html - Electronics & Communications Engineering - from basic concepts

http://www.eleinmec.com/index.asp - Electronics in Meccano - Useful basics of electricity

Thanks frank
I do want to learn it Im shit scared of Zapping my self to death lol
Thanks
I will save the sites
Thanks again all