10th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    When a 12 V battery is connected across an unknown resistor, a current of 2.5 mA flows in the circuit. Calculate the value of the resistance of the resistor.

    A) \[8.9\times {{10}^{3}}\,\,\Omega \]

    B) \[4.8\times {{10}^{3}}\,\,\Omega \]

    C) \[4.8\times {{10}^{5}}\,\,\Omega \]

    D)  \[7.8\times {{10}^{4}}\,\,\Omega \]

    E)  None of these

    Correct Answer: B


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