Question

Pls answer the attachment ASAP its for my board exams. Pls don't give wrong ans I'll fail if you do

Answer 1

Answer:

2Ω

EXPLANATION

$1/R= 1/5 + 1/(10+10) +1/(10+10)+1/5\\1/R=2/5+2/20\\1/R=10/20\\1/R=1/2\\R=2$

Answer 2

Answer:

EXPLANATION

1/R= 1/5 + 1/(10+10) +1/(10+10)+1/5\\1/R=2/5+2/20\\1/R=10/20\\1/R=1/2\\R=2\end{gathered}

1/R=1/5+1/(10+10)+1/(10+10)+1/5

1/R=2/5+2/20

1/R=10/20

1/R=1/2

R=2