Question

pls answer e and f sub question

Answer 1

e) 1/R1+1/R2+1/R3
1/10+1/2+1/1=0.16 ohm
f) 1/R1+1/R2+...
= 1/2+1/2
= 1 ohm
R1+R2+R3..
1+3=4 ohm