2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर

JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Kirchhoff's Law, Cells

  • question_answer
    The reading of a high resistance voltmeter when a cell is connected across it is 2.2 V. When the terminals of the cell are also connected to a resistance of \[5\,\Omega \] the voltmeter reading drops to 1.8 V. Find the internal resistance of the cell                                                                                                            [KCET 2003; MP PMT 2003]

    A)                    \[1.2\,\Omega \]

    B)                                      \[1.3\,\Omega \]

    C)                    \[1.1\,\Omega \]        

    D)            \[1.4\,\Omega \]

    Correct Answer: C

    Solution :

               \[E=2.2\,volt,\] \[V=1.8\,volt,\] \[R=5R\] \[r=\left( \frac{E}{V}-1 \right)\,R=\left( \frac{2.2}{1.8}-1 \right)\,\times 5=1.1\Omega \]


You need to login to perform this action.
You will be redirected in 3 sec spinner