Write the types of dielectric and explain them. Give some examples of dielectric substance.
Write the types of dielectric and explain them. Give some examples of dielectric substance.
The molecules of a substance may be polar or non-polar so, there are two types of dielectric
$(1)$ Polar $(2)$ Non-polar
$(1)$ Polar Molecule: In a polar molecule, the centre of the positive charge and the centre of the negative charge is not coincide with each other such type of molecule is known as polar molecule.
The polar molecules possess a permanent dipole moment. For examples: molecules of $\mathrm{H}_{2} \mathrm{O}, \mathrm{HCl}$.
Following figures shows polar molecules.
$(2)$ Non-polar Molecule : In a non-polar molecule, the centre of the positive charge and the centre of a negative charge is coincide with each other such type of molecule is known as non-polar molecule.
- The non-polar molecule do not possess a permanent dipole moment. For example : molecules of $\mathrm{O}_{2}, \mathrm{H}_{2}$.
Following figures shows nonpolar molecules,
Similar Questions
A capacitor with plate separation $d$ is charged to $V$ volts. The battery is disconnected and a dielectric slab of thickness $\frac{d}{2}$ and dielectric constant ' $2$ ' is inserted between the plates. The potential difference across its terminals becomes
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A capacitor has some dielectric between its plates and the capacitor is connected to a $\mathrm{D.C.}$ source. The battery is now disconnected and then the dielectric is removed. State whether the capacitance, the energy stored in it, electric field, charge stored and the voltage will increase, decrease or remain constant.
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In a capacitor of capacitance $20\,\mu \,F$, the distance between the plates is $2\,mm$. If a dielectric slab of width $1\,mm$ and dielectric constant $2$ is inserted between the plates, then the new capacitance is......$\mu \,F$
In a capacitor of capacitance $20\,\mu \,F$, the distance between the plates is $2\,mm$. If a dielectric slab of width $1\,mm$ and dielectric constant $2$ is inserted between the plates, then the new capacitance is......$\mu \,F$
In a parallel plate capacitor with air between the plates, each plate has an area of $6 \times 10^{-3}\; m ^{2}$ and the distance between the plates is $3 \;mm$ the capacitance of the capacitor is $17.71 \;pF$. If this capacitor is connected to a $100\; V$ supply, $3\; mm$ thick mica sheet (of dielectric constant $=6$ ) were inserted between the plates,
$(a)$ while the voltage supply remained connected.
$(b)$ after the supply was disconnected.
In a parallel plate capacitor with air between the plates, each plate has an area of $6 \times 10^{-3}\; m ^{2}$ and the distance between the plates is $3 \;mm$ the capacitance of the capacitor is $17.71 \;pF$. If this capacitor is connected to a $100\; V$ supply, $3\; mm$ thick mica sheet (of dielectric constant $=6$ ) were inserted between the plates,
$(a)$ while the voltage supply remained connected.
$(b)$ after the supply was disconnected.
Due to which the surface charge density arises on the surface of a dielectric slab, when it is placed in a uniform electric field ?
Due to which the surface charge density arises on the surface of a dielectric slab, when it is placed in a uniform electric field ?