Practice Assignment 3 (Ch 17 & 18 Material) Begin Date: 7/22017 7:00:00 AM -Due

Question

Practice Assignment 3 (Ch 17 & 18 Material) Begin Date: 7/22017 7:00:00 AM -Due Date: 882017 115900 PM End Da AM (10%) Problem 6: Two batteries with emf: 9 V and internal resistance r and a resistor with Ro 15 are connected in series as shown in the figure. 4 25% Part (a) Express the total resistance, R, in terms of, and Ro- Poential 100% I give upt Hints..% dodaction per hint. Hints remaining: 1. Feedback: 0% deduction per feedback. 25% Part (b) Express the current,I, in terms of the emf, d. and the total resistance, R. 25% Part (c) Express the voltage,AV, across the resister in terms of, and Ro- 25% Part (d) Calculate the value of V in volts. 963

Explanation / Answer

a) It can be expressed as-

R = 2r + R0

b) 2e = I R

I = 2e/R

c) dV = I R0

d) dV = e R0/R = 2e R0/(2r + R0) = 2*9*15/(15+8)= 11.74 C

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