JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors Question Bank Heating Effect of Current

  • question_answer Two bulbs are working in parallel order. Bulb A is brighter than bulb B. If \[{{R}_{A}}\] and \[{{R}_{B}}\] are their resistance respectively then                                [MP PMT 2003]

    A)            \[{{R}_{A}}>{{R}_{B}}\]    

    B)            \[{{R}_{A}}<{{R}_{B}}\]

    C)            \[{{R}_{A}}={{R}_{B}}\]    

    D)            None of these

    Correct Answer: B

    Solution :

                       In parallel \[{{P}_{consumed}}\propto \text{Brightness}\propto \frac{1}{R}\] \[{{P}_{A}}>{{P}_{B}}\] (given)     \[\therefore \,\,\,{{R}_{A}}\,<{{R}_{B}}\]

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