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In the circuit shown in the figure, bulbs A and B are glowing.Then the switch is...

In the circuit shown in the figure, bulbs A and B are glowing.Then the switch is closed. What happens to each bulb? Does itget brighter, stay the same, get dimmer, or go out? Explain.
jfk.Figure.23.Q08.jpg
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Answer #1
           *       When the Switch is CLOSED ,then the bulb B gets shortcircuited
            *      This results no current to pass through the bulb B
           *        The effectiveresistance resistance of the circuit decreases and the currentpassing
                      through the bulb A increases
           *        Finally, the bulb Aglows brighter and the bulb B goesout    
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