Related MCQs

• The spin angular momentum along a given direction is either or .
• For a diamagnetic material, μr = 1.
• If ω0 is the angular frequency of rotation of electron in the absence of magnetic field, the angular frequency ω, when a magnetic field B is acting is ω ≅ ω0 + (e/2m)B.
• M = (μr - 1)H.
• If e is the charge of an electron, R is the radius of its orbit and ω is the angular velocity of electron, the magnetic dipole moment μm of the orbit is |μm| = eωR2.
• If B, H and M denote flux density, field intensity and magnetisation, B = μ0 (H + M).
• A leaky dielectric has ∈r = ∈r' - j∈r". If a field E is applied, the current component in phase with E is proportional to ∈r".
• If ∈r = ∈r' - j∈r" tan δ = .
• The equation D = ∈0∈r E refers only to isotropic materials.
• In an homogeneous dielectric subjected to an electric field E, the dipole moment per unit volume is ∈0(∈r - 1) E.