AP Free Response Question
2002 Form B - B3
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Light bulbs of fixed resistance 3.0 ohms and 6.0 ohms, a 9.0 V battery, and a switch S are connected as shown in the schematic diagram above. The switch S is closed.
(a) Calculate the current in bulb A.
(b) Which light bulb is brightest? Justify your answer.
(c) Switch S is then opened. By checking the appropriate spaces below, indicate whether the brightness of each light bulb increases, decreases, or remains the same. Explain your reasoning for each light bulb.
i. Bulb A: The brightness — increases decreases — remains the same
Explanation:
ii. Bulb B: The brightness — increases decreases — remains the same
Explanation:
iii. Bulb C: The brightness — increases decreases — remains the same
Explanation:
Topic Formulas
Description
Published Formula
capacitors in parallel
capacitors in series
electric current
Joule's Law
Ohm's Law
resistance in parallel
resistance in series
resistivity
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