Practice Problem : 8
1. In Fig. 3.38, calculate the total resistance between (a) points A and B (b) points A and C.
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Answer:(i) The equivalent circiuit is
Here the resistance of arm EFGH=10+10+10=30Ω
it will be is parallel to resistance of arm EH=10Ω. Their equivalent resistance
RP=10×3010+30=7.5Ω
Total resistance between AandB
=10+7.5+10=27.5Ω
(ii) The equivalent circuit will be (a) 126 Here the resistance of arm EHG=10+10=20Ω will be in parallel to resistance of arm EFG=10+10=20Ω
Effective resistance point EandG
=20×2020+20=10Ω
Total resistance point AandC
=10+10+10=30Ω
Explanation:
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