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69. Referring to Fig. 249, the resistance acrossterminals AE is13140mva50( 90 () 180() ia(nv) none of the above |
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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 |
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