10th Class Science Electricity and Circuits Question Bank Electricity

  • question_answer
    Observe the given circuit. Find the current passing through resistor.

    A) 0.72 A        

    B) 0.80 A 

    C) 0.48 A         

    D) 0.62 A

    Correct Answer: C

    Solution :

    \[\frac{1}{R}=\frac{1}{{{R}_{1}}}+\frac{1}{{{R}_{2}}}\](in parallel), \[\frac{1}{R}=\frac{1}{6}+\frac{1}{4}\] \[=\frac{4+6}{24}=\frac{10}{24}\]Total \[R=\frac{24}{10}=2.4\,\Omega \] \[Total\,I=1.2A,V=IR=1.2\times 2.4=2.88\,V\] \[V=I{{R}_{1}},I=\frac{2.88}{6}=0.48A\]


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