HWE Chapter 19 DUE 2/24117 500 pm Problem 19.26 Problem 19.26 With a 1500 MS res

Question

HWE Chapter 19 DUE 2/24117 500 pm Problem 19.26 Problem 19.26 With a 1500 MS resistor across its terminals, the terminal voltage of a certain battery is 2.50 V.With only a 5.15 n resistor across its terminals, the terminal voltage is 1,76 V Part A Find the internal emf of this battery. Express your answer in volts to three significant figures. C Submit My Answers Give Up Part B Find the intermal resistance of this battery. Express your answer in ohms to three significant figures. Submit My Answers Give Up Part C What would be the terminal voltage if the 5.15 2 resistor were neplaced by a 7.15n resistor? volts to three significant figures. Express your answer

Explanation / Answer

a] Internal emf = 2.50 V because 1500 Mohm is very huge.

b] 2.50* 5.15/[5.15+r] = 1.76

  2.50* 5.15 = [5.15+r]*1.76

5.15*[2.50-1.76] = 1.76 r

r = 5.15*[2.50-1.76] /1.76 = 2.16 ohm

c] second photo doesnt have full question

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