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10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    Three resistors of \[\text{2}.\text{5 }\Omega ,\text{ 12 }\Omega \] and \[\text{3}.\text{5 }\Omega \] are connected in series. Which of the given single resistors can replace the three of them in a circuit?

    A) \[\text{16 }\Omega \]                                  

    B) \[\text{4 }\Omega \]                    

    C) \[\text{18 }\Omega \]                                  

    D) \[\text{8 }\Omega \]

    Correct Answer: C

    Solution :

    \[{{R}_{E}}={{R}_{1}}+{{R}_{2}}+{{R}_{3}}=2.5+12+3.5=18\,\Omega \] A single resistor of \[18\,\,\Omega \], can replace all the three resistors.


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