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10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    A \[10\,\Omega \] resistance wire AB of length 2 m is connected in a circuit as shown below. What is the reading on the voltmeter when the jockey is at point C?

    A) 1.6 V                     

    B) 2.4 V                     

    C) 9.6 V                     

    D) 12 V

    Correct Answer: C

    Solution :

    Voltage across wire AB = 12 V    Voltage across wire AC \[=\frac{\text{length of wire between AC}}{\text{length of wire between}\,\text{AB}}\times ~\text{voltage across AB}\]     \[=\frac{1.6}{2.0}\times 12\,V=9.6V\]


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