Electrical Engineering - Series-Parallel Circuits - Discussion

Discussion Forum : Series-Parallel Circuits - General Questions (Q.No. 17)
17.
A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k resistors are used to provide the two taps. The two output voltages are
2 V, 4 V
2 V, 2 V
2 V, 6 V
4 V, 6 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

Naveen said:   8 years ago
It is given as threes resistors are used each with rating 2.2kohm.

From the question, we can infer that it is a voltage divider circuit( A 6 V battery output is divided down to obtain two output voltages)

voltage divider circuit consists of 2 impendence and the output is taken across from the mid point

so the three res can be in 2 different combination ( 2 res parallel , 1 load res) or (2 res in series and 1 load res).

2 res parallel and 1 load res ===>> (2.2*2.2)/(2.2+2.2) = 1.1 + the load res 2.2
vout = (z2 *vin)/(z2+z1) = (2.2 * 6)/(2.21.1) = 4 v
**** anothe case (2 res series + 1 load res)
2.2+2.2 = 4.4 and 1 load res 2.2,
vout = (2.2*6)/(2.2+4.4)= 2 v.

So 2v and 4 v are the possible outcomes of three res in different combination.
(2)

Majid said:   7 years ago
This question is just like the working of a Simple Rheostat.

For example our battery is being converted into 2-steps of voltages by taking the connection points (or simply taps). As given below;

Step-1: Take the conncection or tap just after the first resistance>>
So Vout=6 * 2.2k/(3*2.2)k= 2V.
Step-2: Take the tap just after 2 resistors i.e.
vout=6* (2.2k+2.2k)/(3*2.2)k= 4 V.
So sol is 2, 4 V.
(3)

Vimal said:   1 decade ago
We need to equally devide the source or partially divide the source. the source voltage is 6v.

Here give ans are; 2+4=6; 2+2=4, 2+6=8, 4+6=10.

We need the total voltage of 6v at the end of the result.

Because our total voltage given is 6.

So please pick the ans from given four answers.
(1)

Senthil said:   9 years ago
@ Parneet, it will be 2 + 4 only.

Let us say all 3 resistors connected in series and connected to the source. We have a condition that it have only two taps in the load, so obviously we have 2.2 K Ohm and 4.4 K Ohm, and the voltage across them is 2 and 4 V respectively.

Maya said:   1 decade ago
Two 2.2 reg are in parallel [1.1] and series with 3rd reg.[2.2] after this apply voltage divider rule.

Parneet kaur said:   1 decade ago
@Vimal I want to know If any option of 3+3 is given then what is the correct answer 3+3 or 2+6.

Geeta H said:   3 years ago
@Majid.

How come 3? Please explain that.

Sebsbie zewdu said:   8 years ago
Please clarif it in simplest way.

RB Krishna said:   1 decade ago
Explain the question please.

Mohana said:   1 decade ago
Explanation please.


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