Electrical Engineering - Circuit Theorems and Conversions - Discussion

Discussion :: Circuit Theorems and Conversions - General Questions (Q.No.2)

2. 

A certain current source has the values IS = 4 µA and RS = 1.2 M. The values for an equivalent voltage source are

[A]. 4.8 V, 1.2 M
[B]. 1 V, 1.2 M
[C]. 4.8 V, 4.8 M
[D]. 4.8 V, 1.2 M

Answer: Option D

Explanation:

No answer description available for this question.

Janmejay said: (May 16, 2011)  
v(s)=i(s)*r(s)

Bharat said: (Feb 11, 2012)  
As a ohms law is V=IR we will ge the voltage as 4.8v option 4 is right.

Sabari said: (Apr 23, 2013)  
V = IR.

V = (4*10^-6)(1.2*10^6).

V = (4*1.2)=4.8V.

Naveed said: (Oct 15, 2013)  
@Sabari @Bharat @Janmejay your procedure is not correct.

P = VI = V^2/R = I^2*R.

P = 4.8^2/1.2*10^6 = 1.92*10^-5.

So option D is correct.

Fan said: (Dec 31, 2014)  
@Naveed.

What's power got to do with the problem?

Mounika Pati said: (Jan 31, 2015)  
As we know from Ohms Law,

V = IR.

= (4*10^-6)*(1.2*10^6).

= 4.8v.

''Voltage = 4.8v''.

Tinnu said: (Feb 6, 2015)  
There are two options with 4.8v so by calculating power we can get right option.

Zaim said: (Jul 20, 2015)  
How to calculate the resistance of voltage source?

Yugal Kishor Bairagi said: (Sep 6, 2015)  
Given data:-

I = 4 micro Amps.

R = 1.2 Mega Ohms.

V = IR.

So, V = 4*1.2 = 4.8 V.

(where micro & mega is cancel out, because micro means 10 the power minus -6 & mega means 10 the power plus +6).

Sana said: (Jun 22, 2017)  
I = 4 micro Amps.

R = 1.2 Mega Ohms.

V = IR.
So, V = 4*1.2 = 4.8 V.
in options 2nd is the resistance so, by using this vtg we can find r=4.8/4*10^-6=1.2 Mohm.

Kusal said: (Dec 21, 2017)  
This is a case.

Convert current source to voltage source.
So voltage is 4.8 & resistance is no change.

Ramza said: (Nov 14, 2018)  
Apply Ohm's law to find voltage.

And there will be no change in resistance.
V=IR,
V=4.8V,
R=1.2Mohms.

Hidden Tesla said: (Oct 24, 2019)  
Using Source Conversion Theorems.

Current Source Converted to Voltage Source - Vs = Is*Rs=4*1.2 = 4.8V.

Now Rs = 1.2Mohm Connected Series with Voltage source.

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