2. Solved Papers
  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    A \[10\,\Omega \]electric heater operates on a 110 V line. The rate at which heat is developed in watts is

    A)  1310 W                               

    B)  670 W

    C)  810 W                                  

    D)  1210 W

    Correct Answer: D

    Solution :

                     The rate at which heat is developed \[H=\frac{{{V}^{2}}}{R}=\frac{{{(110)}^{2}}}{10}\] \[=1210\,W\]


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