Question

130. 2 Ω 10 Ω www 3 Ω 9 Ω ww 9V The equivalent resistance for the above circuit is : (1) 6 Ω (2) 3 Ω (3) 9 Ω (4) 8 Ω​

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

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