# What is the equivalent resistance of this network

Discuss What is the equivalent resistance of this network in the Electrical Courses and Electrical NVQ's area at ElectriciansForums.net

T

#### turbomen

Welcome to ElectriciansForums.net - The American Electrical Advice Forum

Two resistors, R1 and R2 are connected in parallel. R1 is 2kW, R2 is 4kW. What is the equivalent resistance of this network (answer rounded to nearest whole Ohm):

Could you tell me how can you get the answer?

#### andyb

##### -
Arms
Esteemed
turbomen

Are you trying to get us to do your homework?

1/r=1/r1+1/r2

you do the calculations

T

#### turbomen

Hi Andy,

Thank you for your help but it is not a homework - it is a test review question.

Cheers,

S

#### Spudnik

Whats a test review question??

T

#### turbomen

Can I do in this way:-

1/r = 1/2k+1/4k

1/r = 2/4k+1/4k

1/r= 3/4k

r=1333

But could you mind tell me about the formula? Because I do not learn the formula in before.

Cheers,

#### andyb

##### -
Arms
Esteemed
You put the decimal point in the wrong place, the answer is 1.33 but you got it.

The formula is the method for calculating resistance in parallel, I don't know what else to say.

T

#### turbomen

Hi Andy,

Thank you for your kind reply. But it is a multi-ple choice question: The only choices are 60, 13, 6000 or 13330.

#### andyb

##### -
Arms
Esteemed
Sorry turbomen.I missed the K value and worked it out as 2 & 4 ohms.

So yes, you calculated it correctly.

#### old dog

##### -
Arms
1/requv = 1/R1 + 1/R2

requiv = !/R1 + R2

G

#### Guest123

And for a series circuit = R1+R2+R3 etcetc.

Reply to What is the equivalent resistance of this network in the Electrical Courses and Electrical NVQ's area at ElectriciansForums.net