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Three conductors draw currents of 1 A, 2...

Three conductors draw currents of 1 A, 2 A and 3 A respectively, when connected in turn across a battery. If they are connected in series and the combination is connected across the same battery, the current drawn will be

A

`2/7 A`

B

`3/7 A`

C

`4/7 A`

D

`5/7 A`.

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