2. Questions Bank
  3. 12th Class
  4. Physics
  5. Electrostatics & Capacitance

12th Class Physics Electrostatics & Capacitance Question Bank MCQ - Electrostatic Potential and Capacitance

  • question_answer
    Calculate the energy stored in a capacitor whose value is \[10\,\mu F\], charged by a battery of 100 V.

    A) 5J                    

    B) 0.5J     

    C) 0.05J                           

    D) 0.005 J

    Correct Answer: C

    Solution :

    (c) 0.05J Energy stored, \[U=\frac{1}{2}C{{V}^{2}}\] \[=\frac{1}{2}\times 10\times {{10}^{-6}}\times {{\left( 100 \right)}^{2}}\] \[=5\times {{10}^{-6}}\times {{10}^{4}}\] \[=5\times {{10}^{-2}}=0.05\,J\]


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