D2-SCT42: FOUR RESISTOR CIRCUIT II-CURRENT In the circuit shown, the sizes of th
ID: 777322 • Letter: D
Question
D2-SCT42: FOUR RESISTOR CIRCUIT II-CURRENT In the circuit shown, the sizes of the resistors vary as R>R>R> R. Four students discussing the currents in this circuit make the following statements: Ali: "I think the current in R, will be the largest because all of the current from Ben "I think the current through R, R, and R, will all be the same because there Clyde: "Well I disagree with Ben. I think the current in R, will be larger than the Dar "The only thing I am sure about is that the current in R, will be the same as that in R, because they are in the battery goes through it. are hwo branches in the circuit and each branch will get haif of the current." current in R, and R. The currents in the branches depend on the resistances of the branches." the same branch. With which, if any, of these students do you agree? Ali Explain your reasoning. Be Clyde_VDar None of themExplanation / Answer
Your answer is right.
Ali is right the total current in the circuit passes through resistance R1.
It divides into two parts in the inverse ratio of resistances at the junction of two branches
Hence Ben is wrong
Total Resistance of R3 & R4 is greater than R2 hence current through R2 branch is greater than R3 & R4 branch. I.e., Clyde is right.
Dar is right because current through R3 & R4 is same as they are in same branch of circuit and they are in series.
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