In respect of following voltage regulators select the option that is correct.
1
Buck regulator has voltage gain as K with negligible values of rL and rc
2
Boost regulator has voltage gain as \(\left(\frac{1-K}{2}\right)\) with negligible values of rL and rc
3
Buck-boost regulator has voltage gain as \(\left(\frac{K}{1−K}\right)\) with negligible value of rL and rc
4
Only (a) and (c) are correct