Home
Class 12
PHYSICS
A 600pF capacitor is charged by a 200V s...

A 600pF capacitor is charged by a 200V supply. It is then disconnected form the supply and is connected to another uncharged 600pF capacitor. How much electrostatic energy is lost in the process?

Text Solution

Verified by Experts

Here `C_1=C_2=600pF=600xx10^-12`
`F=6xx10^-10F`,
`V_1=200V,V_2=0`
Loss of energy `=(C_1C_2(V_1-V_2)^2)/(2(C_1+C_2))`
`=(6xx10^-10 6xx10^-10(200-0)^2)/(2(6xx10^-10+6xx10^10))`
`=(36xx10^-20xx4xx10^4)/(24xx10^-10)`
`=6xx10^-6J`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Additional Excercise|36 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Textual Examples|10 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Long Answer Questions|3 Videos

  • ELECTROMAGNETIC WAVE

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise ADDITIONAL EXERCISES|19 Videos

  • MAGNETISM AND MATTER

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise Additional Exercises|19 Videos

Similar Questions

Explore conceptually related problems

A 4muF capacitor is charged by a 200 V supply. It is then disconnected from the supply . And is connected to another uncharged 2muF capacitor. How much electrostatic energy of the first capacitor is lost in the form of heat and electromagnetic radiation ?

A 12pF capacitor is connected to a 50V battery. How much electrostatic energy is stored in the capacitor ?

A 900pF capacitor is charged by 100 V battery. How much electros-tatic energy is stored by the capacitor? (b) The capacitor is disconnected from the battery and connected to another 900 pF. Capacitor. What is the electrostatic energy stored by the system?

A 20F capacitor is charged to 5 V and isolated. It is then connected in parallel with an uncharged 30 F capacitor. The decrease in the energy of the system will be

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electric field E between the plates.