Three equal resistors (R) are connected to a battery, as shown in Fig. 19-42. Qu

Question

Three equal resistors (R) are connected to a battery, as shown in Fig. 19-42. Qualitatively, what happens to the following when the switch S is opened, after having been closed for a long time? the voltage drop across each of these resistors R1 R2 R3 the current flow through each the terminal voltage of the battery increases decreases goes to zero If the emf of the battery is 10.7 V, what is its terminal voltage when the switch is closed if the internal resistance is 0.50 Ohm and R1 = R2 = R3 = 5.56 Ohm? V What is the terminal voltage when the switch S is open? V

Explanation / Answer

a) voltage drop across

R1-decreases

R2- increases

R3-goes to zero

b) current flow through

R1-decreases

R2- increases

R3-goes to zero

c) terminal voltage increases

d)10.09 V

e) 10.24 V

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