Question

QUESTIONS A line of uniformly-distributed total charge has a length = 25 m. At a radial distance - 0.30 m from the middle of the line the electric field = 81 NC. The line charge is closest to 11 nc О 68 с. 34 nc 107 nc QUESTION A metallic spherical shell has an inner radius -0.40mand outer radius 0.75m and a net charge -6.00. An isolated point charge-3.5 is located at thecenter of the shelf 0.0m). The charge on the outer surface of the shells O 0.0 -3.5 +25 +601

Answer 1

Question 8 Z at point A Electric field is given by L 22 (4/2) kx zſz²+4/2² here ka in charge density Coulomb constant linear charge Distance midelle from L length of z g the point then, putting the values 9 81 8.987X10 x 2 x Cux(12:5) 0.3 / 10 .312 + (12.53² 81 x 0.3x 10.212+12.592 8.987 x 109 x 2 x (12.5) 9 1.3523X10 * This is charge density so, Total Charge 1XL 33.8x10-9 line charge 34nc

Question 9 :- +6uc -3.sua same +3.5 uc +3.50 inner surface Now Because of point charge in the centre, quantity of opposite charge will induce rurfece ie on metallic Apherical shall must be Now let charge on outer surface Now Total Charge = + 6 uc equal to then = > 6 at 3.5 n 6-3.5 hee +2.5 uc +2.5ic outer surface Charge - Ans