## anonymous one year ago What is the equivalent resistance of the circuit shown? A. 0.87 Ù B. 1.2 Ù C. 5.9 Ù D. 6.2 Ù

1. anonymous

2. Michele_Laino

first step: the equivalent circuit is: |dw:1434308145988:dw| where R is: $\Large R = \frac{1}{{\frac{1}{{4.5}} + \frac{1}{{1.3}} + \frac{1}{{6.3}}}} = ...Ohms$

3. anonymous

0.869? so choice A is our solution?

4. Michele_Laino

no, I got a different result since: $\Large R = \frac{1}{{\frac{1}{{4.5}} + \frac{1}{{1.3}} + \frac{1}{{6.3}}}} = 1.15Ohms$

5. Michele_Laino

so total resistance is: $\Large {R_{TOTAL}} = 5 + 1.15 = ...Ohms$

6. anonymous

ohh okay! i am not sure why i got a different result! so then we get 6.15? about 6.2? choice D is our solution?

7. Michele_Laino

yes! That's right!

8. anonymous

ooh ok! yay! thanks!:)

9. Michele_Laino

:)