Question

A) What is the equivalent resistance Req? R, =50 w w R2 = 80 3 R = 30 R = 20 B) A real battery with an emf of 15V and an internal resistance of r = 222 is connected instead of the ideal battery from Part A. What is the magnitude of the potential difference |Vabl between the terminals of the battery? R, = 5 a m R2 = 8 3R, = 30 R = 20 b C) Suppose the collection of resistors is replaced by a resistor with R = 2 Req (twice the value of your answer from Part A). Does the potential difference between the battery's terminals (your answer to Part B) increase, decrease, or stay the same? Why? R = 2Req

Answer 1

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A) Riera Ra are in in parallel Req - 5x8 5 +8 & haetody R. I tt R2 Ri 3.12 Req, Rz and Ra are in Series R- Rau + R₂ + RL 3:1 + 3 + 2 = 8132 8) E- Iy Current E 15 IVOTA (RAY) (2+Roal) Terminal potential difference Hare Ru is only different to Regh Bet3t2 I = 1.5 A 15 2+8.1 V = E-Iv - 15- 1-5x2 12.02 V increases c) As Real So as I decreases, terminal potential difference I decreases. Since I E (Ray CScanned with CamScanner V increases.