Question

69. Referring to Fig. 249, the resistance across
terminals AE is
13
140
mv
a
50
( 90 () 180
() ia
(nv) none of the above​

Answer 1

Answer:

The effective circuit is shown in the figure.

The resistance of arm EHG=10Ω+10Ω=20ΩEHG=10Ω+10Ω=20Ω

will be parallel to resistance of arm

FG=10Ω+10Ω=20ΩFG=10Ω+10Ω=20Ω

Their effective resistance =20Ω×20Ω20Ω+20Ω=10Ω=20Ω×20Ω20Ω+20Ω=10Ω

Therefore, the equivalent resistance between AA and

D=5Ω+10Ω+5Ω=20Ω