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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 0.350 Ω, the other an internal resistance of 0.100 Ω. 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 0.350 Ω, the other an internal resistance of 0.100 Ω. 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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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 0.350 Ω , the other an internal resistance of 0.100 Ω . When the switch is closed, a current of 600 m A 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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