Consider the circuit shown in the figure below. (Assume R1 = 10.5 , R2 = 1.30 ,

Question

Consider the circuit shown in the figure below. (Assume R1 = 10.5 , R2 = 1.30 , and V = 6.90 V) 4.00 5.00 R2 3.00 a) Calculate the equivalent resistance of the R and 5.00-n resistors connected in paralel 3.39 b) Using the result of part (a), calculate the combined resistance of the R,5.00-1 and 4.00-0 resistors (c) Calculate the equivalent resistance of the combined resistance found in part (b) and the parallel 3.00-2 resistor. Your response differs from the correct answer by more than 10%. Double check your calculations. Combine the squivalntresistance found in art e) with the (e) Calculate the total current in the circuit. (f) What is the voltage drop across the R2 resistor?

Explanation / Answer

a) Req = 1/(1/5 + 1/10.5)
= 3.39 Ohms

b) Req = 3.39 + 4
= 7.39 Ohms

c) Req = 1/(1/3+1/7.39)
= 2.13 Ohms

d) Req = 1.3 + 2.13
= 3.43 Ohms

e) V = 6.90 V
Req = 3.43 Ohms
So,
I = V/R = 6.90/3.43
= 2.01 A

f) V = IR = 2.13*2.01
= 4.28 V

g) 6.90-4.28 = 2.62 V

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