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Class 10 Science Medium Mcq English Medium

To obtain a total resistance of 9 ohm using three 6 ohm resistors, which arrangement should be used?

Question
To obtain a total resistance of 9 ohm using three 6 ohm resistors, which arrangement should be used?
All three in parallel
Two in parallel, combination in series with third
All three in series
It cannot be achieved with 6 ohm resistors
Answer
Two in parallel, combination in series with third
Detailed Explanation
Two 6 ohm in parallel give 3 ohm; adding the third 6 ohm in series gives 3+6 = 9 ohm.
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