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January 30, 2015

January 30, 2015

Posted by **Ashley** on Thursday, November 29, 2012 at 3:08pm.

- Physics -
**Damon**, Thursday, November 29, 2012 at 4:10pm1/R = 1/R1 + 1/R2 = (R1 + R2)/R1 R2

so

R = R1 R2 / (R1+R2)

= 6/5 = 1.2 Ohms

to derive

i1 = V/R1

I2 = V/R2

i = i1+i2 = V/R1 + V/R2

but

R = V/i = V/(V/R1 +V/R2) = 1/(1/R1+1/R2)

= R1 R2 / (R2 + R1)

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