Homework Help: Physics

Posted by struggling student on Thursday, January 24, 2013 at 4:47pm.

A series combination of two resistors of resistance 12 Ù and 8 Ù is connected across a source of emf 24 V. What is the potential difference across 8 Ù resistors?

Do you know the formula for this?

Physics - drwls, Thursday, January 24, 2013 at 4:54pm
Yes, I know the formula. It is called Ohm's Law.

Why do you write "8 Ohm resistors" if there is only one of them?
Physics - struggling student, Thursday, January 24, 2013 at 4:58pm
That's my point, this is the exact question and i don't understand it. I didn't write 8 ohm resistors, my book did. Do you understand what they're asking?

thanks
Physics - struggling student, Thursday, January 24, 2013 at 5:13pm
There are four possible answers:

9.6V
14.4V
20V
24V
Physics - Elena, Thursday, January 24, 2013 at 5:38pm
I=U/(R1+R2) =2.4/(12+8) =1.2 A,
U1= I•R1= 1.2•8 = 9.6 V,
U2= I •R2=1.2•12=14.4 V.

Answer this Question

Related Questions

Physics - A)Two identical resistors are connected in parallel across a 30-V ...
Physics - A)Two identical resistors are connected in parallel across a 30-V ...
physics - If three identical resistors are connected in series to a battery, the...
Physics - Thanks for any help :) Four 20 ohm resistors are connected in parallel...
physics numerical - a parallel combination of two resistors of 2ohm each has ...
Physics-Please help - I need a little direction with this question:If someone ...
Physics - 1)Four resistors of 10.0 each are connected in parallel. A combination...
physics - Four 20 ohm resistors are connected in series and the combination is ...
Physics - Two resistors of equal resistance are connected in series with each ...
Physics - Two resistors of equal resistance are connected in series with each ...

For Further Reading

First Name:
School Subject:
Answer: