Q enclosed refers to net charge enclosed inside the closed surface. For example. If 2 C and -4 C are enclosed inside the surface, q encl = 2+ (-4) = -2 C . SO OPTION A SUITS THE BEST.
Please let me know if it was helpful. Thank you!
Gauss's law is usually written phi _E = contourintegral E vector middot dA vector = q_encl/epsilon...
1. Use Gauss's Law , = EdA E A4 = lected - Lected to closed surface dosad surface decedurece 6,6 derive and utilize the expression needed to calculate the electric field 3.45 um away from a +2e point charge (e.g., a Cae* cation) in distilled water with relative permittivity & 78.2, vacuum permittivity & = 8.854x10-27-cm', and e=1.602x10-"C. 2. Use the expression for the electric potential due to a point charge V = charge 2 . 9 4ter 418, calculate...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...