Circuits Flashcards

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1
Q

Circuit A has three identical resistors connected in series, whereas circuit B has three resistors (identical to those in circuit A) connected in parallel. Which circuit uses the most power if connected to identical batteries?
Circuit A
Circuit B
Both circuits have the same power
Cannot be determined with the information given

A

Circuit B

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2
Q

Circuit A has three identical resistors connected in series, whereas circuit B has three resistors (identical to those in circuit A) connected in parallel. Which circuit draws the most current from if connected to identical batteries?
Circuit A
Circuit B
Both circuits draw the same current
Cannot be determined with the information given

A

Circuit B

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3
Q

Circuit A has three identical resistors connected in series, whereas circuit B has three resistors (identical to those in circuit A) connected in parallel. In which circuit is the potential difference across any given resistor the greatest, if the circuits are connected to identical batteries?
Circuit A
Circuit B
The potential difference across each resistor is the same in both circuits.
Cannot be determined with the information given

A

Circuit B

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4
Q
A 30 W and a 50 W light bulb are designed for use with the same voltage.  What is the ratio of the resistance of the 50 W bulb to the resistance of the 30 W bulb (R50/R30)?
A.  0.36
B.  0.6
C.  1.7
D.  2:8
A

0.6

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5
Q
5.  If two resistors are connected in parallel and the equivalent resistance of those two resistors is 0.5  ,  which of the following values could not possibly be the resistance of one of the individual resistors?
A.  0.25  
B.  1  
C.  1.5  
D.  2.0
A

0.25 ohms

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