ECE :: Materials and Components
-
The induced magnetic dipole moment has a direction opposite to the applied magnetic field.
-
An atom of polarizability a is placed in a homogeneous electric field E. The energy stored in polarized atom is
-
If B, H and M denote flux density, field intensity and magnetisation, B = μ0 (H + M).
-
A capacitor can be represented by a capacitance and resistance in parallel. For a good capacitor, this parallel resistance should be
-
Assertion (A): Ionic solids, in general, have no electrical conductivity.
Reason (R): In ionic solids, electrons are tightly bound to the nucleus.
-
Two coaxial metallic cylinders have radii R1 and R2. The space between them is filled with a dielectric having dielectric constant ∈r. The capacitance per metre length is
-
A rare gas has N atoms per m3. If electronic polarizability of single atom of this gas is ae, then
-
The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is
Whatsapp
Facebook
