# Finding an unknow value of resistance (HELP REQUIRED )

#### Adamnufc1

finding an unknow value of resistance (HELP REQUIRED!!!)

1. Homework Statement

Two resistors in parallel, R1 of 470 ohms and R2 of unknow value, are connected in series with two more parallel resistors R3 of value 1kohm and R4 of value 270 ohms. The supply is 110 V dc and the potential difference across the parallel pair of resistors R3 and R4 is 60V.

Ive been looking at this question for a while and a bit of help would be greatly appreciated.

Determine the value of resistance R2

2. Homework Equations

V1 = (R1/R1+R2) Vin

Transposed to find R2. Ive came out at an answer of 564 ohms. Anyone able to check im correct and help me on this problem? Thanks in advance

3. The Attempt at a Solution
1. Homework Statement

2. Homework Equations

3. The Attempt at a Solution

Related Engineering and Comp Sci Homework Help News on Phys.org

#### tiny-tim

Science Advisor
Homework Helper
Welcome to PF!

Hi Adamnufc1! Welcome to PF! Show us your full calculations, and then we can see what went wrong, and we'll know how to help. ### Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving