Solve Electric Diode Problem: Find I & V

[Learnphysics]

Homework Statement

Find values of I and V for the circuits of figure; assuming that the diodes are ideal.
http://yfrog.com/081034op

Picture: http://img8.imageshack.us/img8/3026/1034o.png

Homework Equations

I can use KVL/KCL.

And have a rough knowledge of finding wheather a diode is on or off using guess and check method.

The soloution given by multiple sources is assuming D1 is on and D2 is off, V=10v and I=0.

(it may be possible that the question itself is stated wrong), are these answers correct/possible?

The Attempt at a Solution

I know current I is 0. if D2 is off (because it creates an open circuit).

but i don't understand how 10v is obtained for V...

Ah, i see We apply voltage divider equations, (New question: do i delete this thread or leave it up for anyone else to reference)

 

[berkeman]

Homework Statement

Find values of I and V for the circuits of figure; assuming that the diodes are ideal.
http://yfrog.com/081034op

Picture: http://img8.imageshack.us/img8/3026/1034o.png

Homework Equations

I can use KVL/KCL.

And have a rough knowledge of finding wheather a diode is on or off using guess and check method.

The soloution given by multiple sources is assuming D1 is on and D2 is off, V=10v and I=0.

(it may be possible that the question itself is stated wrong), are these answers correct/possible?

The Attempt at a Solution

I know current I is 0. if D2 is off (because it creates an open circuit).

but i don't understand how 10v is obtained for V...

Ah, i see We apply voltage divider equations, (New question: do i delete this thread or leave it up for anyone else to reference)

Glad you figured it out. In general, it is best to leave up your question, even if you figured it out without extra help from others. For sure you should not delete your original question if it has received responses.