Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.210 2, the other an internal resistance of 0.190 2. When the switch is closed, a current of 600 mA occurs in the lamp. (a) What is the bulb's resistance? Ω (b) What fraction of the chemical energy transformed appears as internal energy in the batteries? %
Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.210 2, the other an internal resistance of 0.190 2. When the switch is closed, a current of 600 mA occurs in the lamp. (a) What is the bulb's resistance? Ω (b) What fraction of the chemical energy transformed appears as internal energy in the batteries? %
Chapter10: Direct-current Circuits
Section: Chapter Questions
Problem 25P: A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of...
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![Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into the barrel of a flashlight. One
battery has an internal resistance of 0.210 , the other an internal resistance of 0.190 . When the switch is closed, a current of 600
mA occurs in the lamp.
(a) What is the bulb's resistance?
Ω
(b) What fraction of the chemical energy transformed appears as internal energy in the batteries?
%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff236ec6d-59e1-428f-8115-1fdcab9d5ceb%2Feb2acb4c-4fa8-4deb-ba8e-1a20503ed982%2Fs7mvrj_processed.png&w=3840&q=75)
Transcribed Image Text:Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into the barrel of a flashlight. One
battery has an internal resistance of 0.210 , the other an internal resistance of 0.190 . When the switch is closed, a current of 600
mA occurs in the lamp.
(a) What is the bulb's resistance?
Ω
(b) What fraction of the chemical energy transformed appears as internal energy in the batteries?
%
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