Advertisements
Advertisements
प्रश्न
Define the terms polarization of a dielectric and write its relation with susceptibility.
Advertisements
उत्तर
Both polar or non-polar dielectrics develop a net dipole moment in the presence of an external field. The dipole moment per unit volume is called polarisation and is denoted by P. For linear isotropic dielectrics, The dipole moment per unit volume is called polarisation and is denoted by P. For linear isotropic dielectrics,
`P=chiE`
where χ is electric susceptibility of the dielectric medium
APPEARS IN
संबंधित प्रश्न
Electric intensity due to a charged sphere at a point outside the sphere decreases with...................
Write a relation for polarisation `vecP`of a dielectric material in the presence of an external electric field `vecE .`
How does polarised dielectric modify the original external field?
Which of the following waves can be polarized (i) Heat waves (ii) Sound waves? Give reason to support your answer.
Two metal plates having charges Q, −Q face each other at some separation and are dipped into an oil tank. If the oil is pumped out, the electric field between the plates will
A dielectric slab is inserted between the plates of an isolated charged capacitor. Which of the following quantities will remain the same?
A dielectric slab is inserted between the plates of a capacitor. The charge on the capacitor is Q and the magnitude of the induced charge on each surface of the dielectric is Q'.
The voltage rating of a parallel plate capacitor is 500V. Its dielectric can withstand a maximum electric field of 106 V/m. The plate area is 10-4 m2. What is the dielectric constant if the capacitance is 15 pF?
(given ε0 = 8.86 × 10-12 C2/Nm2)
