Term
| Q: A small handheld flashlight has 4 - 1.5 V (AA size) batteries. this gives a potential difference of 6 V . The bulb has a resistance of 8 Ω. How much current is in the bulb filament? |
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Definition
A: I= V/R
I=6/8
I=.75 amps |
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Term
Q: An electric hair dryer requires 1200 W at
110 V. What is the resistance of the heating coil in the hair dryer? |
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Definition
A: P= IV
1200= I(110)
I= 10.909 amps
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Term
| What is the relationship between currentcharge and time? |
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Definition
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Term
Q: If you hold charge constant and increase the time, what happens to the current?
a) it decreases
b) it stays the same
c) it increases
d) MAN!!... what is this 21 questions, I don't know and I certainly don't care! |
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Definition
A: c) It increases
P.S. If you chose D as your answer please exit the room and jump off the balcony before I find you and severely injure you, because I will not accept this kind of attitude coming from an immature teenager who barely knows how to spell his/her name. GOODBYE =D |
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Term
Q: If you hold charge constant and decrease the time, what happens to the current?
A: it increases
B: it decreases
C: it stays the same
D: it spontaneously explodes =D |
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Definition
B: it decreases
P.S. If you chose D as your answer go see your guidance counseler immediately. |
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Term
How is power affected by...
a. ...doubling the current?
b. ...tripling the current?
c. ...decreasing the current in a resistor to half its original value? |
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Definition
Correct answer = 1 space, incorrect answer = -2 spaces
A: a. 4 times
b. 9 times
c. .25 times |
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Term
Q: Four resistors with values of 1.0 Ω, 2.0 Ω. 4.0 Ω, 6 Ω are connected
... in series . What is the equivalent resistance of this combination?
...in parallel. What is their equivalent resistance?
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Definition
Correct answer = 1 space, incorrect answer = -2 spaces
A: a) 1.0+2.0+4.0+6= 12 Ω
b) (1/1)+(1/2)+(1/4)+(1/6)= 1/x
23/12=1/x
12/23Ω or .523 Ω =x
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