**Question Stem:** 在实际的电源中,其内部也是存在电阻的,我们称为内阻,常用 r 表示。某同学根据所学知识设计了一个转向灯电路如图所示,知道各灯泡的额定电压为 6V,电源的电动势为 6V,其中 L 为指示灯,L₁, L₂ 分别为左、右转向灯,S 为单刀双掷开关,E 为电源。当 S 置于位置 1 时,以下判断正确的是( ) **Chart/Diagram Description:** Type: Circuit Diagram. Main Elements: * Power Source: Labeled E, with specifications (6V 1Ω) indicating an electromotive force of 6V and an internal resistance of 1Ω. * Switch: Labeled S, a single-pole double-throw switch with two positions labeled 1 and 2. The common terminal is connected to the power source. Position 1 is connected to the node between L₁ and L, and also to L₁. Position 2 is connected to the node between L₂ and L, and also to L₂. * Lights: * L₁: Labeled (6V 16W), indicating a rated voltage of 6V and a rated power of 16W. Connected between the common terminal of S (when in position 1) and the positive terminal of the power source. * L: Labeled (6V 1.2W), indicating a rated voltage of 6V and a rated power of 1.2W. Connected between the common terminal of S (when in position 1 or 2) and the negative terminal of the power source, and also connected to L₁ and L₂. Specifically, L is connected in series with the selected branch (either L₁ or L₂). The node connecting L₁ and L is also connected to S position 1. The node connecting L₂ and L is also connected to S position 2. The connection point below L connects to the negative terminal of the power source. * L₂: Labeled (6V 16W), indicating a rated voltage of 6V and a rated power of 16W. Connected between the common terminal of S (when in position 2) and the positive terminal of the power source. * Connections: The power source is connected in a loop with the switch S, the chosen branch (L₁ or L₂) and the light L. Specifically, the positive terminal of E is connected to the other end of L₁ and L₂. The common terminal of S is connected to the end of L. The other end of L is connected to the negative terminal of E. **Options:** A. L₂ 亮,其功率等于额定功率 B. L₁ 亮,其功率等于额定功率 C. L 亮,其功率小于额定功率 D. 含 L 支路的总功率较另一支路的大

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