In the circuit as shown in the figure, the heat produced by $6\, ohm$ resistance due to current flowing in it is $60$ calorie per second. The heat generated across $3\, ohm$ resistance per second will be ................. $calorie$

126-6

  • A

    $30$ 

  • B

    $60$

  • C

    $100$ 

  • D

    $120$ 

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  • [AIIMS 2015]