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Answer:
section-A
1)Gauss Law states that the total electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity
2)Actually, electric potential decreases as you move farther from a charge distribution. ... That's because like charges repel each other, so it takes more and more energy to move the charges together the closer you get.
4)meter bridge works on the principle of wheat stone bridge
5) Since the force on the particle is equal to the cross product of velocity and magnetic field, so the force will be maximum when the motion will be in a direction perpendicular to the magnetic field and the force will be zero when the motion will be along the direction of the magnetic field or opposite to it.
6)The magnitude of torque acting on the arm PQ about AB is τPQ = (1/2 sinθ) and points in the direction of AB. The magnitude of the torque acting on the arm. RS about AB is τRS = (b/2 sinθ) IaB and points also in the same direction AB.
7)Magnetization is the density of magnetic dipole moments that are induced in a magnetic material when it is placed near a magnet. ... Magnetization is also known as magnet polarization
8) lenz's law
9) zero
part-b
11)Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.
12) The mobility of charge carriers in a current carrying conductor can be defined as the net average velocity with which the free-electrons move towards the positive end of a conductor under the influence of an external electric field that is being applied. Mathematically, we can define it as: μ=VdE
13)The resistance of a conductor depends on the cross sectional area of the conductor, the length of the conductor, and its resistivity. It is important to note that electrical conductivity and resistivity are inversely proportional, meaning that the more conductive something is the less resistive it is
14)The equation for the magnetic field strength (magnitude) produced by a long straight current-carrying wire is: B=μ0I2πr. For a long straight wire where I is the current, r is the shortest distance to the wire, and the constant 0=4π10−7 T⋅m/A is the permeability of free space.
15)A galvanometer can be converted in to a voltmeter by connecting a high resistance in series connection within it.
16)Ampere's Circuital law: It is the relationship between the current and the magnetic field created by the current. So according to this law the integral of magnetic field density (B) along an imaginary path is equal to the product of the permeability of the free space and the current enclosed by the path.
17)Sources of energy loss in transformers are due to (I ) copper loss (ii ) Magnetic flux linkage loss ,
(iii ) Hysteresis loss and (iv ) eddy current loss.
part-c
19) 1)Field lines never intersect each other.
2)They are perpendicular to the surface charge.
3)The field is strong when the lines are close together, and it is weak when the field lines move apart from each other.
20) photo attached
21)•The law is not applicable to unilateral networks. Unilateral networks allow the current to flow in one direction. ...
•Ohm's law is also not applicable to non – linear elements. ...
•The relation between V and I depends on the sign of V.
22)the magnetic intensity at any point due to a steady current in an infinitely long straight wire is directly proportional to the current and inversely proportional to the distance from point to wire
24)Its main applications are induction cooking, induction furnace used to heat metals to their melting point, welding, brazing etc. ... with the help of eddy current induction in the metal if present.
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