Useful Constant Permittivity in vacuum: a) = 8.854 × 10 12 c2/(N m?) Coulomb con

Question

Useful Constant Permittivity in vacuum: a) = 8.854 × 10 12 c2/(N m?) Coulomb constant: ke = 9 x 109 N m2/C2 Permeability of free space: to-47x 10" T. m/A Problem 1. (4 points) The general form of Ampère's law. An electric field is increasing with time as 40+ 30 (V/m) where t is time in second. The filed is confined to a square area with side d 10 cm as shown in Fig. 1 and directed outward perpendicular to the plane of the figure. What is the magnitude of the magnetic field at the point P,r 20 cm from the center of the square? (A) 0.5|1,2 (B)1.5(2 T) (C) 2-6 ) (D) 3.0 2.me out 2 me TC Figure 1. Time-dependent electric field in a square area. Problem 2. (4 points) The Ampère-Maxwell law. A 30-A current is charging a capacitor that has circular plates 5 mm in diameter. The plate separation is 4 mm. What is the magnetic field between the plates 1 mm from the center? (A) 1 mT (B) 2 mT (C) 3 mT (D) 6 mT Type here to search End Poup Prtscn

Explanation / Answer

I guess you are not understanding that where did magnetic field came ffrom ??

Actually a moving charge produces a magnetic field around it and here the changing electric field is resulting in movement of charges thus producing magnetic field in the nearby areas.

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