Physics

Physics

Problem

![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/6c221c240c3d/2025_11_20_5ae6787582d2300a8a2ag-22.jpg) 1987B4. Three resistors are arranged in a circuit as shown above. The battery has an unknown but constant emf E\boldsymbol{\mathcal { E }} and a negligible internal resistance. a. Determine the equivalent resistance of the three resistors. The current I in resistor R3\mathrm{R}_{3} is 0.40 ampere. b. Determine the emf⁡E\operatorname{emf} \boldsymbol{\mathcal { E }} (Voltage) of the battery. c. Determine the potential difference across resistor R1\mathrm{R}_{1} d. Determine the power dissipated in resistor R1\mathrm{R}_{1} e. Determine the amount of charge that passes through resistor R3\mathrm{R}_{3} in one minute.

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