An electrical circuit is connected up as shown above, which of the following is correct about the value of current flowing through the 1 ohm resistance?

12/13A
13/12A
1/3A
3A
12/7A
Explanation

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Discussions (18)

according to the question they were referring, to 1Ohms if you watch carefully you will find that 3 and 1 are in series so total Resistance is 4Ohms.. from V=KI
v=IR
I=V/R
I=12/4
I=3A.
Team SPM


find the total resistance in the circuit there are two parallel connect so sort it out first
1/r = 1/3+1/3=2/3; r= 3/2
1/r=1/3+1/3=2/3; r= 3/2
add them together
3/2 + 3/2 = 3
so they are connected in series to 1ohm resistor that is r= 3+1= 4
v=ir
I= v/r
I= 12/4
I = 3
so the current passing through resistors in series are the same so the answer is 3

why does your system keep changing answers. I could answer b and end up seeing that my answer was changed to d... please fix this

