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CBSE Class 10 Science 2023 Outside Delhi Set 2

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Question : 8
Total: 12
Three resistors of 6Ω,4Ω and 4Ω are connected together so that the total resistance is 8Ω. Draw a diagram to show this arrangement and give reason to justify your answer.
Solution:  
In parallel,
‌‌
1
R′
=‌
1
4
+‌
1
4

‌R′=‌
4
2
=2Ω
In series,
R‌=R′+R′′
2Ω+6Ω‌=8Ω
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