Question

whats the equivalent resistance here

Answer 1

Explanation:

since resistance are joined in series so,...

'r' equivalent should be r1 + r2 + r3

( r )eq = 3r

Answer 2

Answer:

Explanation:

here last two resistors are in series combination with each other and their combination is parallel the first resistor

r+r=2r

1/r+1/2r=2r/3