Question 252: Electrostatics & Capacitance

Question

A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab of dielectric constant 15. Then the energy of capacitor will :

Accepted Answer

$$U = {1 \over 2}(k{C_0}){V^2}$$
$$ \Rightarrow {{U'} \over U} = 1.5$$
$$\Rightarrow$$ Energy increases by 50%

Answer

increase by 50%

Answer

decrease by 15%

Answer

increase by 25%

Answer

increase by 33%

Electrostatics & Capacitance

A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab of dielectric constant 15. Then the energy of capacitor will :

Choose the correct answer: