Germanium atom has ______ protons and ______ electrons.
32, 32
32, 42
42, 32
34, 34
- The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
- Who discovered superconductivity in 1911?
- What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
- An alloy of 22 percent iron and 78 per cent nickel.
- What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring…
- Who developed the electromagnetic theory of light in 1862?
- What principle states that each electron in an atom must have a different set of quantum numbers?
- Which of the following magnetic materials can be easily magnetized in both direction?
- Which of the following is a natural magnet?
- The property of a material which opposes the creation of magnetic flux in it
- If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
- The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
- What is the measure of the density and sign of the electric charge at a point relative to that at some…
- A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
- ______ is an electromagnet with its core in the form of a close magnetic ring.
- The unit of electrical energy is
- The emf produced in a wire by its motion across a magnetic field does not depend upon the
- The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
- The magnetic potential in a magnetic circuit can be measured in terms of
- What is the SI unit of specific resistance or resistivity?
- The phenomenon by which a subtracts pieces of iron
- What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
- What is the SI unit of magnetic flux?
- Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
- The B-H curve for ________ is a straight line passing through the origin.
- How much is the flux in Weber in the above problem?
- Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
- What is used as the insulating material or dielectric in an electric ion
- An alloy of 40 percent iron and 60 percent nickel.
- Materials that have very high permeabilities (hundreds and even thousands times of that of free space)