Consider the following. (Take R 1 = 5.1 ? and R 2 = 7.7 ?.) (a) The 6.0 ? resist

Question

Consider the following. (Take

R1 = 5.1 ? and R2 = 7.7 ?.)

(a) The 6.0 ? resistor in the figure above carries a current of 1.4 A. Find the current through the 5.1 ? resistor.


(b) If the 3.0 ? resistor were replaced by a different resistor, which, if any, of the other resistors would carry the same current as before?

Consider the following. (Take R1 = 5.1 ? and R2 = 7.7 ?.) (a) The 6.0 ? resistor in the figure above carries a current of 1.4 A. Find the current through the 5.1 ? resistor. (b) If the 3.0 ? resistor were replaced by a different resistor, which, if any, of the other resistors would carry the same current as before?

Explanation / Answer

V6 = 6*i6 = 1.4*6 = 8.4 v

i3 = 8.4/3 = 2.8 A

V2 = R2*(i3+i6) = 7.7*(1.4+2.8) = 32.34 v

V = v6 + v2 = 8.4+32.34 =40.74 V

I1 = V/R1 = 7.98 A

b) through R1 current is same

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