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10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    Several \[\text{150 }\Omega \] resistors are to be connected in such a way that a current of 2 A flows from a 50 V source. How many such resistors are required along with a mode to connect them?

    A) 6 series                               

    B) 8 series                               

    C) 6 parallel            

    D) 8 parallel                            

    Correct Answer: C

    Solution :

    \[{{R}_{E}}=\frac{V}{I}=\frac{50}{2}=25\Omega \frac{1}{25}=n\left( \frac{1}{150} \right),\] where 'n' is the number of resistors. \[\therefore \] \[n=150/25=6\] 6 resistors of \[25\Omega \]. must be connected in parallel since, \[{{R}_{E}}\] must be lower than \[150\,\Omega \].


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