part 1 part 2 part 3 part 1 5.0 Points What is the current flowing through bulb

Question

part 1

part 2

part 3

part 1

5.0 Points What is the current flowing through bulb 1? A. 1.00 A B. 2.00 A C. 3.00 A D. 4.00 A E. 5.00 A Reset Selection

part 2

5.0 Points What is the current flowing through bulb 4? A. 1.00 A B. 2.00 A C. 3.00 A D. 4.00 A E. 5.00 A Reset Selection

part 3

5.0 Points What is the order of the brightness of the four light bulbs? A. Bulb 2 > Bulb 1 > Blub 3 > Bulb 4 B. Bulb 1 > Bulb 2 > Blubs 3 and 4 (same brightness) C. Bulb 1 > Blubs 3 and 4 (same brightness) > Blub 2 D. Bulbs 3 and 4 (same brightness) > Bulb 2 > Blub 1 E. Bulb 2 > Blubs 3 and 4 (same brightness) > Blub 1 Reset Selection

Explanation / Answer

Part1) i = V/R = 30/10 = 3 A

part2) total resistance of loop of resistance 2,3,4 = 10+ 10÷2 = 15 ohm

i= 30/15 = 2A,

Current through bulb 4 will be half of this value= 1A

part 3)

B option is correct as current in Bulb1 = 3A, bulb2=2A, bulb3,4=1A

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