# DC E AB Rank the following five identical bulbs from brightest to dimmest. Ranking Bulb Brightness.

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DC E AB Rank the following five identical bulbs from brightest to dimmest. Ranking Bulb Brightness

Complete circuit?

Complete circuit? No! Yes!

Simple Circuit

Series Circuit

Parallel Circuit

Series/Parallel Circuit

Parallel/Series Circuit

Compare bulb brightness. vs. Brighter bulbs 

Rank the brightness of the bulbs … C > A = B A B C 1

Rank the brightness of the bulbs … A > B = C A BC 2

Rank the brightness of the bulbs … A = B = C = D D B C A 3

Rank the brightness of the bulbs … B > A > C = D A B C D 4

C A D B Rank the brightness of the bulbs … D > C > B = A 5

The following problem is a modification of one of the questions on the exam given to select the members of the 2000 US Physics Team.

DC E AB List the order of brightness of the bulbs - When bulb A is removed from its socket 1

D B C E DC E BA C > D > E = B 1

DC E AB List the order of brightness of the bulbs - When bulb E is removed from its socket 2

DC AB E 2 A = B = C = D D B C A

DC E AB List the order of brightness of the bulbs - When bulb A and E are both removed from their sockets. 3

DC BA E DC 3 C = D

DC E AB List the order of brightness of the bulbs - When bulbs A and D are both removed from their sockets. 4

C E B D A BCE 4 C = E = B

DC E AB List the order of brightness of the bulbs - When a wire is connected across the terminals of socket A. 5

DC E AB D B C E 5 B > D > E = C

DC E AB List the order of brightness of the bulbs - When a wire is connected across the terminals of socket E. 6

DC E AB 6 A = B = C = D D B C A

DC E AB List the order of brightness of the bulbs - When wires are connected across the terminals of sockets C and E. 7

DC E AB D B 7 B = D

DC E AB List the order of brightness of the bulbs - When wires are connected across the terminals of sockets A and D. 8

DC E AB B C E 8 B = E = C

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