Question

what is the equivalent resistance between points A and B​

Answer 1

Answer:

10ohms

Explanation:

three 20 ohm resistance are in series then equipment of these three is 60 .

and eqvivalent of two 10 ohms are in series then they are added and resultant of that two 10 ohms are 20. now 60 , 20, 30, are connected in parallel then they are inversed and added.

then the resultant will be =1÷60+1÷20+1÷30

=1÷10

then the resultant will be reverse of this

=10

Answer 2

Answer:

R1=20+20+20=60(as these resistances are in series)

R2=10+10=20

R3=30

So Equivalent Resistance=1/r1+1/r2+1/r3=1/rp=1/60+1/20+1/30=1+2+3/60=6/60=1/10

so 1/rp=1/10

hence rp ,i.e., Equivalent Resistance=10ohms