The smallest resistance which can be obtained with ten 0.1 ohm resistors is

1 ohm

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0.1 ohm

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0.01 ohm

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0.001 ohm

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Solution

The correct option is B 0.01 ohm
When the resistances are connected in parallel, the effective resistance becomes less than the smallest individual resistance. Thus smallest resistance is obtained when ten $0.1 Ω$ resistors are connected in parallel.
$∴$ Effective resistance $R_{p} = \frac{r}{10} = \frac{0.1}{10} = 0.01 Ω$

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The smallest resistance which can be obtained with ten 0.1 ohm resistors is

The correct option is B 0.01 ohmWhen the resistances are connected in parallel, the effective resistance becomes less than the smallest individual resistance. Thus smallest resistance is obtained when ten 0.1Ω resistors are connected in parallel.∴ Effective resistance Rp=r10=0.110=0.01Ω