A winter holiday decoration uses a string of N light bulbs (resistance R B ), ea

Question

A winter holiday decoration uses a string ofNlight bulbs (resistanceRB), each of which has a resistorRSin parallel.What is the total resistance of the chain?
(RS+RB)/N
NRSRB/(RS+RB)
N(RS+RB)

If one of the bulbs burns out, what happens to the otherN?1 bulbs?
They will have the same brightness as before.
Independent of whetherRSis bigger or smaller thanRB, they will become brighter.
Independent of whetherRSis bigger or smaller thanRB, they will become dimmer, but not go out.
IfRSis bigger thanRB, they will become brighter. IfRSis smaller thanRB, they will become dimmer, but not go out.
IfRSis smaller thanRB, they will become brighter. IfRSis bigger thanRB, they will become dimmer, but not go out.
They will all go out.

A winter holiday decoration uses a string ofNlight bulbs (resistanceRB), each of which has a resistorRSin parallel.What is the total resistance of the chain? (RS+RB)/N NRSRB/(RS+RB) N(RS+RB) If one of the bulbs burns out, what happens to the otherN?1 bulbs? They will have the same brightness as before. Independent of whetherRSis bigger or smaller thanRB, they will become brighter. Independent of whetherRSis bigger or smaller thanRB, they will become dimmer, but not go out. IfRSis bigger thanRB, they will become brighter. IfRSis smaller thanRB, they will become dimmer, but not go out. IfRSis smaller thanRB, they will become brighter. IfRSis bigger thanRB, they will become dimmer, but not go out. They will all go out.

Explanation / Answer

a. NRSRB/(RS+RB) Independent of whetherRSis bigger or smaller thanRB, they will become dimmer, but not go out. since voltage drop across Rb increasses

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