alleryStart learning →Work done in charging a capacitor from zero to Q equals which expression?
AQ squared divided by C
BQ squared divided by 2C
CThe product Q times C
DTwice Q squared over C
Answer & Solution
Correct answer: B. Q squared divided by 2C
Integrating V' dQ' = Q'/C dQ' from 0 to Q gives Q squared over 2C.
Keep practising Electrostatic Potential and Capacitance
Browse all Electrostatic Potential and Capacitance questions for Bihar Board Class 12 (Science), or explore more Physics topics.
Related questions
Does a capacitor's stored energy depend on how its charge was built up?A conductor can act as a capacitor alone if the second conductor is assumed where?If the charge on a capacitor is doubled, what happens to the field between its plates?In a capacitor, what is the net total charge of the whole system when plates carry +Q and Which use follows from electrostatic shielding by a conducting box?Why is the field at a charged conductor's surface normal to it?Where does excess charge reside on a conductor with a cavity containing no charges?What is the electric field inside a charge-free cavity of a conductor placed in any extern