23-08-2020, 08:28 PM
Hmm.
1.5V is the correct answer. But it is a very artificial question, transistors having a current gain that's predictable to a few percent, are almost unheard of. And circuits which rely on that, are bad circuits.
The circuit has also the heavily-stabilised bias system that almost disappeared when silicon took over from germanium. Relatively unknown in the field, now.
There's some redundant info in the question too - 2mA collector current; 1.5kilohms; 3V dropped across load. Given two of these, the third could have been deduced! (I suppose we've got to be glad they were consistent!)
1.5V is the correct answer. But it is a very artificial question, transistors having a current gain that's predictable to a few percent, are almost unheard of. And circuits which rely on that, are bad circuits.
The circuit has also the heavily-stabilised bias system that almost disappeared when silicon took over from germanium. Relatively unknown in the field, now.
There's some redundant info in the question too - 2mA collector current; 1.5kilohms; 3V dropped across load. Given two of these, the third could have been deduced! (I suppose we've got to be glad they were consistent!)
