Two 1 50 V batterieswith their positive terminals in the same directionare inserted in series into the barrel of a flashlight One battery has an internal resistance of 0 255 , the other an internal resistance of 0 153 When the switch is closed, a current of 0 600 A passes through the lamp (a) What is the lamps resistance (b) What fraction of the power dissipated is dissipated in the batteries

Question: Two 1.50-V batterieswith their positive terminals in the same directionare inserted in series into the barrel of a flashlight. One battery has an internal resistance

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 0.255 Ω, the other an internal resistance of 0.153 Ω. When the switch is closed, a current of 0.600 A passes through the lamp.
(a) What is the lamp’s resistance?
(b) What fraction of the power dissipated is dissipated in the batteries?

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