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(A) Consider the circuit shown in the figure. Calculate the potential difference

ID: 2141265 • Letter: #

Question

(A) Consider the circuit shown in the figure. Calculate the potential difference across R4. Use the following data: R1 = 40.0 ?, R2 = 16.5 ?, R3 = 17.0 ?, R4 = 41.5 ?, ? = 25.5 V.

(B) Calculate the current in R2.


Consider the circuit shown in the figure. Calculate the potential difference across R4. Use the following data: R1 = 40.0 ?, R2 = 16.5 ?, R3 = 17.0 ?, R4 = 41.5 ?, ? = 25.5 V

Explanation / Answer

a). Req = [(R1*R2)/(R1+R2)] + R3 +R4 => Req = 70.18 ohm I = V/Req = 25.5/70.18 = 0.363 A current in R2 = [R1/(R1+R2)]*I = 0.257 A Potential difference across R4 = I*R4 = 15.065 V

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