Electrical Engineering - Series Circuits - Discussion

Discussion :: Series Circuits - General Questions (Q.No.11)

11. 

Two resistors are in series: a 5.6 k resistor and a 4.7 k resistor. The voltage drop across the 5.6 k resistor is 10 V. The voltage across the 4.7 k resistor is

[A]. 8.39 V
[B]. 10 V
[C]. 2.32 V
[D]. 0 V

Answer: Option A

Explanation:

No answer description available for this question.

Monalisa said: (Jan 24, 2011)  
current across 5.6 kohm register =10/5.6*1000=0.00178 A
so,voltage across 4.7 Kohm =.00178*4.7=8.3A

Raju said: (Feb 2, 2011)  
Thank you monali

Anurag Jaiswal said: (Jul 19, 2011)  
current will be same for both the register because it is in series,
so if we consider current across the registers is I,
Soby I=V/R;
I=10/(5.6*1000)=0.001786A
So Voltage across 4.7 kohm register:
V=0.001786*(4.7*1000)=8.394V

Anand said: (Jul 26, 2011)  
Nice explanation Anurag

Rakesh Yadav said: (Aug 23, 2013)  
Current flowing through all resistance in series is same.

In this question value of one resistor and voltage is given so we can find out the value of current.

10/(5.6*10^3) = 0.001785.

Voltage across 4.7 k ohm is V = IR : 4.7*10^3 * 0.001785 = 8.394.

Manirose said: (May 3, 2014)  
The easy method:

V1/r1 = V2/r2.

So,

5.7/10 = 4.7/v2.

1.785*1000 = v2/4.7.

0.001785*4.7 = v2 .

V2 = 8.394.

Sushama said: (Aug 26, 2014)  
R1+R2 = 5.6+4.7 = 10.3 K.
I = V/10.3.

V1 = 10V = 5.6XV/10.3.
V = 10X10.3/5.6 = 18.39.

Voltage across 4.7 K = 8.394.

Ravi said: (Dec 7, 2014)  
I is same in series:

So, I = v1/r1 = 10/5.6 = 1.8.

v2 = I*r2 = 1.8*4.7 = 8.4.

Vinod said: (Dec 19, 2015)  
v1/r1 = v2/r2.
10/5.6 = x/4.7.

x = 8.39.

Prince Manju said: (Jan 24, 2016)  
Because in series circuit current through the both the resistors is same so that we can multiply the 5.6k ohm resistor's current with 4.7 K resistor.

Jagadesh said: (Feb 22, 2016)  
Voltage in 4.7 kv = 4.7 k*i.

i = Voltage in 5.6k/5.6k.

i = 10/5.6 k A.

v in 4.7 k = 4.7 k*10/5.6 k.

= 8.39 V.

A C Parmar said: (Mar 5, 2016)  
5.6 K Ohm = 10 V.

4.7 K Ohm = ?

4.7*10/5.6 = 8.3928571 V.

M Salman Khan said: (Oct 17, 2016)  
Thanks @Anurag.

Jatin said: (Jan 13, 2017)  
Thanks to all for the great explanation.

Syed said: (Aug 20, 2017)  
Nice @Manirose.

Joseph said: (Nov 16, 2019)  
Can someone please make a figure about this question.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.