Electronics - Series-Parallel Circuits - Discussion

13. 

If the load in the given circuit is open, what is the unloaded output voltage?

[A]. 0 V
[B]. 4 V
[C]. 16 V
[D]. 20 V

Answer: Option C

Explanation:

No answer description available for this question.

Divya said: (Sep 15, 2011)  
Unloaded o/p volt. means rl=0

Therefore r1&r2 are in series

i=v/r=20/(2k+8k)=2mA
v across r2 is
v=ir=2m*8k=16.

Manoj Bhat said: (Apr 24, 2015)  
Find the current in the circuit:

Add R1 & R2 which are in series.

R1+R2 = 10 kohm.

Current, I = 2 m amps.

Since vout is taken,

V = IR1.

V = 2m*2k.

V = 4V.

Therefore Vout = 20-4 = 16V.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.