JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Different Measuring Instruments

  • question_answer
    A galvanometer having a resistance of 8 ohm is shunted by a wire of resistance 2 ohm. If the total current is 1 amp, the part of it passing through the shunt will be                                                                                        [CBSE PMT 1998]

    A)                    0.25 amp                        

    B)            0.8 amp

    C)                    0.2 amp                          

    D)            0.5 amp

    Correct Answer: B

    Solution :

                 \[{{i}_{g}}S=(i-{{i}_{g}})G\] Þ \[{{i}_{g}}(S+G)=iG\]            Þ \[\frac{{{i}_{g}}}{i}=\frac{G}{S+G}=\frac{8}{2+8}=0.8\]


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