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10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    A 2 V battery is connected across a \[\text{4 }\Omega \] resistor. Calculate the heat produced in 10 seconds.

    A) 20 J                                       

    B) 30 J                       

    C) 10 J                                       

    D) 40 J                       

    Correct Answer: C

    Solution :

    \[H=\frac{{{V}^{2}}}{R}t=\frac{{{(2V)}^{2}}}{4\,\Omega }\times 10s=\frac{4}{4}\times 10=10\,J\]


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