A circuit contains three identical bulbs lit by connection to a single battery. When a wire is connected across the terminals of one of the bulbs, it goes out and so does another one of the bulbs. The remaining bulb becomes brighter.  a.) Sketch the circuit in which the two bulbs must have been arranged. Explain reasoning b.) What would happen to the brightness of the other two bulbs if the wire were connected across the terminals of the bulb that does not go out in part (a)?

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A circuit contains three identical bulbs lit by connection to a single battery. When a wire is connected across the terminals of one of the bulbs, it goes out and so does another one of the bulbs. The remaining bulb becomes brighter. 

a.) Sketch the circuit in which the two bulbs must have been arranged. Explain reasoning

b.) What would happen to the brightness of the other two bulbs if the wire were connected across the terminals of the bulb that does not go out in part (a)? 

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