Unit: Electricity
Year: 1994 Question#: 28
Question: A series circuit has a total resistance of 1.00 x 10 2 ohms and an applied potential difference of 2.00 x 10 2 volts. The amount of charge passing any point in the circuit in 2.00 seconds is
(1 ) 1.26 x 10 19 C
(2 ) 2.00C
(3 ) 2.52 x 10 19 C
(4 ) 4.00C
What is this question really asking?
Explanation by: Liz M.
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Answer 1
1.26 x 10 19 C
INCORRECT
I am unsure of how you acheived this answer. To solve this you must plug numbers into the formula: R = V/R and then the formula I=q / t return to top
Answer 2
2.00C
INCORRECT
This would be the amount of current in one second but not two seconds.
To find the correct answer you need to use the formulas: R= V/ I and I =
q/
tand then plug in the given numbers. In achieving this answer you probably switched the R and V values.
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Answer 3
2.52 x 10 19 C
INCORRECT
I am unsure of how you acheived this answer. To solve this you must plug numbers into the formula: R = V/R and then the formula I=q / t return to top
Answer 4
4.0 V
CORRECT
To find the correct answer you had to plug the numbers into the formulas:
you know that
you then just plug the numbers into the equations.
return to top What's this question really asking?
This question is asking if you know how to apply the formulas related to series circuits if given numbers to plug in. return to top
