JEE Main & Advanced JEE Main Paper (Held on 10-4-2019 Morning)

  • question_answer Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capacitances are: [JEE Main 10-4-2019 Morning]

    A) \[50\mu F\text{ }and\text{ }30\mu F\]

    B)   \[20\mu F\text{ }and\text{ }30\mu F\]

    C) \[60\mu F\text{ }and\text{ }40\mu F\]

    D)   \[40\mu F\text{ }and\text{ }10\mu F\]

    Correct Answer: D

    Solution :

    As q = CV Hence slope of graph will give capacitance. Slope will be more in parallel combination. Hence capacitance in parallel should be \[50\mu F\]& in series combination must be \[8\mu F\]. Only in option \[40\mu F\text{ }\And \text{ }10\mu F\] \[{{C}_{parallel}}=40+10=50\mu F\] \[{{C}_{series}}=\frac{40\times 10}{40+10}=8\mu F\]

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