The new value of the magnetic field at point p is 16mt.
The magnitude of the electric field E produced by a charged particle at a point P is the electric force per unit positive charge exerted on another charged particle at that point. The direction of the electric field is the direction of the force on the positive charge.
Volume charge density ρ is the amount of charge per unit volume Surface charge density σ is the amount per unit area with the unit normal directed outwards between two point charges whose volume density is the polarization density P is the dipole moment. The center of the reflective surface of a spherical mirror is a point called the pole. on the surface of the mirror. Poles are usually denoted by the letter P.
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