Electrical Engineering - Series-Parallel Circuits - Discussion
Discussion Forum : Series-Parallel Circuits - General Questions (Q.No. 16)
16.
A 12 k
resistor, a 15 k resistor, and a 22 k resistor are in series with two 10 k resistors that are in parallel. The source voltage is 75 V. Current through the 15 k resistor is approximately
resistor, a 15 k resistor, and a 22 k resistor are in series with two 10 k resistors that are in parallel. The source voltage is 75 V. Current through the 15 k resistor is approximatelyDiscussion:
16 comments Page 2 of 2.
Ahmed said:
1 decade ago
RKM , we do not have any current source so how can CDR be used ?
If the question about any 10 k ohm , then we find the total resistor then use I=V/R(total) <<<= here I is as I source.
Then back to the original drawing and use CDR:
I(throught 10 kohm) = (R(total of two 10kohm)/R10kohm+R10kohm)*Isource.
I = (5/10)*1.388m.
=0.694mA for each R10 k ohm.
By using kirshof current low ( KCL ) we prove that Isource = I1 + I2.
I = (0.694 + 0.694 ) mA.
= 1.388 mA.
If the question about any 10 k ohm , then we find the total resistor then use I=V/R(total) <<<= here I is as I source.
Then back to the original drawing and use CDR:
I(throught 10 kohm) = (R(total of two 10kohm)/R10kohm+R10kohm)*Isource.
I = (5/10)*1.388m.
=0.694mA for each R10 k ohm.
By using kirshof current low ( KCL ) we prove that Isource = I1 + I2.
I = (0.694 + 0.694 ) mA.
= 1.388 mA.
RKM said:
1 decade ago
Using current divider rule after total current flow we get the answer.
Dhiraj kadh said:
1 decade ago
Ok but they add total resistance of the the circuit. And in series circuit current same in all resistance so answer is 1.4mA.
Haris Ismail said:
1 decade ago
But Question is Current through the 15 k resistor is approximately?
Here all of you give the answer of full resistance of the circuit not for particular one.
Here all of you give the answer of full resistance of the circuit not for particular one.
Tisha said:
1 decade ago
(12+15+22)+ ((10*10)/(10+10))=54kohm
I=V/R= 75/54= 1.3888
approx 1.4
I=V/R= 75/54= 1.3888
approx 1.4
ARUNsankar P said:
1 decade ago
49*75/20+75=38.68
THEN
38/38.68=1.37...SO ROUND OFF 1.4
THEN
38/38.68=1.37...SO ROUND OFF 1.4
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