Question

Find maximum and minimum resistance obtained by three resistors 5 ohm, 10

ohm, 15 ohm.​

Answer 1

Explanation:

max resistance would be when they r in series connection

in series, total resistance =r1 + r2+r3 = 5+10+15=30 ohm

min resistance would be when they r in parallel connection

I parallel, 1/ total resistance = 1/r1 + 1/r2 +1/r3

1/total r= 1/5+ 1/10 + 1/15

1/total r =(6+3+2)/30

total r = 30/11=2.72ohm

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Answer 2

Answer:

maximum resistance = series combination

R=R1+R2+R3

R=5+10+15

R=30ohm

minimum resistance = parallel combination

1/R=1/R1+1/R2+1/R3

1/R=1/5+1/10+1/15

1/R=6+3+2/30

1/R=11/30

R=30/11

R=2.7ohm

Explanation:

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