University:
Kentucky State University
Course:
PHY 212 | General Physics II
Academic year:

2024
Views:

327

Pages:

27
Author:

lhuseroha

Ch 27: Circuits Single Loop Circuits [\mathcal{E} = \frac{dw}{dq}] Types of [\mathcal{E}_{mf}] (battery): Ideal [\mathcal{E}{mf}]: (no internal resistance). (r=0) [\mathcal{V}{terminal} = \mathcal{E}_{mf}] [Diagram of an ideal battery connected to a resistor] Real [\mathcal{E}{mf}]: here is an internal resistance (r≠0) [\mathcal{V}{terminal} \neq \mathcal{E}_{mf}] [Diagram of a real battery with internal resistance connected to a resistor] Later [\mathcal{V}{battery} = \mathcal{E}{mf} - Ir] Ch 27: Circuits Single Loop Circuits [\mathcal{E} = \frac{dw}{dq}] Types of [\mathcal{E}_{mf}] (battery): Ideal [\mathcal{E}{mf}]: (no internal resistance). (r=0) [\mathcal{V}{terminal} = \mathcal{E}_{mf}] [Diagram of an ideal battery connected to a resistor] Real [\mathcal{E}{mf}]: here is an internal resistance (r≠0) [\mathcal{V}{terminal} \neq \mathcal{E}_{mf}] [Diagram of a real battery with internal resistance connected to a resistor] Later [\mathcal{V}{battery} = \mathcal{E}{mf} - Ir] Circuits P7 Page 726: [\mathcal{E}{1}=12V, \mathcal{E}{2}=6V] [R_{1}=4\Omega, R_{2}=8\Omega] [Diagram of a circuit with two batteries (E1 and E2) and two resistors (R1 and R2) connected in series.] [i = \frac{\mathcal{E}{1} - \mathcal{E}{2}}{R_{eq}} = \frac{12 - 6}{4 + 8} = \frac{6}{12} = \frac{1}{2} A] [P_{R_{1}} = i^2R_{1} = (\frac{1}{2})^2 \times 4 = 1 W] [P_{R_{2}} = i^2R_{2} = (\frac{1}{2})^2 \times 8 = 2 W] [P_{\mathcal{E}{1}} = \mathcal{E}{1}i = 12 \times \frac{1}{2} = 6 W] [P_{\mathcal{E}{2}} = \mathcal{E}{2}i = 3 W]

Chapter 27 Circuits

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