Problem 2 6= An n-type Si sample (n = 100 cm³, 11.7) with Na = 100 cm³ has trapped positive = 10° cm 2. Find the value of the surface surface charges at the surface density N's potential os assuming that os

infinitely long non conducting wire of inner radius R and An outer radius 2R. The volumetric charge densi7g r=Kr the cylindrical shell is given by the Here ex pression K is positive constant and r is the distance from the axis af the cylinder a) Find the electric ficld în the region r> 2R Using Gauss's lauw. 6) Find the potential ditterence VB-VA using electric tieldl the you fourd. -p=Kr 2R A -3R- -ム 一

x+x Ex03 Consider a quantity of charge 4 distrubated over a portion of a circumference with center 0 and radius R 25cm, with lunear density Diz 10th c/cm (^<0). The Portion has a length Ro (0 = 11). 2 α) Gove the expression for the elementary electrostatio fueld dB created by de the elementary charge density "do at the center 0. b) First gove do as a function of R, R and do. 0) Deduce the foeld & created by the charge of at point 。 and calculate the modulus Б of 1)+ HDL

Please solve asap i'm studying for my test tomorrow and i need the answer

1. Comsider fuo charnges y. - 37e and paitions (20, 88, 87) and C, = 18 e at -45 -1) 元,40) Respeekinly ane in the reale of 10-> matow. of parition wetar of the dlagge Vi is R, and change e is ñz where ll the coordinates meanured m Or nans Now consider anather charge V3 yz plem paudioned at *- n). caloulade nat fance d aeling - 30 e in the L18 4s - 18). c) Net Farce due to ather dengea on goeomponent-?,z eomponent -II due to alher ebarges! [n componel =? d) Net Farce on V2 [nemponent :?, g oumporant a?, zleamponant .? I e) ealeulate the net destmie field at the pandion of No due to ri an Nate that cant ealeulade deotrie you panikion . Own . field of No at it's Ln =? , g=?, z:?

A 5.0 x 10 15 m. FIND THE EPE BERYLLIUM NUCLEUS CONTAINS FOUR PROTONS SE PARATED BY STORE D IN THIS NUCLEUS. THE CAPACITANCE OF A PARALLEL PLATE CAPACITOR 1S 15 uF. A DIFFERENCE OF POTENTIAL a) FIND THE b) FIND THE (5 %3D S 12.0 VOLTS IS PLACED ACROSS ITS PLATES . CHARGE ON E ACH PLATE ELE CTRIC FIELD BETWEEN THE PLATES IF THE SEPARATION PLATE Is 1.5 mm .

The charge density of cylindler with infinite length is given as plr) = Poe rla %3D where a is the radivus of the cylnder, Caleulate the elactric field is givetas epressions for Ocrea and a

Two non-conducting spheres of radii R1 and R2 are uniformly charged with charge densities p1 and p2 , respectively. They are separated at center-to-center distance a (see below). Find the electric field at point P located at a distance r from the center of sphere 1 and is in the direction from the line joining the two spheres assuming their charge densities are not affected by the presence of the other sphere. (Hint: Work one sphere at a time and use the superposition principle.)

Two parallel conducting plates, each of cross-sectional area 400 cm2, are 2.0 cm apart and uncharged. If 1.01012 electrons are transferred from one plate to the other, what are (a) the charge density on each plate? (b) The electric field between the plates?

A 10cm10cm piece of aluminum foil of 0.1 mm thickness has a charge of that spreads on both wide side surfaces evenly. You may ignore the charges on the thin sides of the edges. (a) Find the charge density. (b) Find the electric field 1 cm from the center, assuring approximate planar symmetry.