$A$ cell,a resistor,a key and an ammeter are arranged as shown in the circuit diagrams of the figure. The current recorded in the ammeter will be

  • A
    The same in all the cases
  • B
    maximum in $(i)$
  • C
    maximum in $(ii)$
  • D
    maximum in $(iii)$

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You are given three equal resistors. The number of resistances which can be obtained by joining them in series and in parallel grouping is

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