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You may use the applet given above to answer the following questions.
(A)The circuit below shows 3 identical bulbs.
- When the switch is closed, what are the relative brightness of the bulbs?
- How would the brightness of B change when the switch is opened? Justify your answer.
(B) A series of bulbs are connected in different ways as illustrated by the circuits shown below.
- What is the relative brightness of B1, B2 and B3?
- What does your observation tell you about the relative currents through the batteries? Justify your answer.