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Circuit Problems P 5 May 28, 2013 B A Bulbs A, B, C and D are identical answer the question below and defend your answer D C Which bulb is brightest? 1. All are equally bright 3. Bulb C is brightest 2. A and B are brightest 4. Bulb is D are brightest 5. None of the above Circuit Problems P 5 Hints: to solve this you need to determine how V and I compare for each bulb thinking about equivalent resistance - Req - helps Hint 1: Why is the current through bulb D greater than through bulbs A, B or C? Rank the current from highest to lowest. Hint 2: If the current through bulb C must be less than the current through bulb D, is the voltage also less? Explain May 28, 2013 Circuit Problems P 5 May 28, 2013 Circuit Problems P 5 May 28, 2013 Circuit Problems P 5 May 28, 2013 All resistors are 4 Ohms 1. Find R eq for R1, R2, R3 2. Find total R eq R2 3. Find I R3 4. Find V across R1 and V across R4 R1 8V R4 Circuit Problems P 5 May 28, 2013 Circuit Problems P 5 May 28, 2013 Circuit Problems P 5 May 28, 2013