Unit: Electric
Year: 1992 Question#: 26
Question: In the circuit shown below, how many coulombs of charge will pass through resistor R in 2.0 seconds.
(1 ) 36C
(2 ) 6.0C
(3 ) 3.0C
(4 ) 4.0C
What is this question really asking?
Explanation by: JohnL
[ Return to question menu ]
Answer 1
36C
INCORRECT
Using I=
q/t , slip in all the varibles correctly:sec=2
I=3A
q=?And it is easy to see that 36C is incorrect. return to top
Answer 2
6.0C
CORRECT
I=
q/t3A=
q/2sec6C=
q
return to top Answer 3
3.0C
INCORRECT
Using I=
q/t , slip in all the varibles correctly:sec=2
I=3A
q=?By putting in the varibles correctly, as in the two prior problems, one can see that 3.0C would be an incorrect answer. return to top
Answer 4
4.0C
INCORRECT
Using I=
q/t , slip in all the varibles correctly:sec=2
I=3A
q=?By putting in the varibles correctly, as in the two prior problems, one can see that 4.0C would be an incorrect answer. return to top
What's this question really asking?
Can you apply the definition formula for current and avoid using all the hidden information? return to top
