Question

test charge would move along cach line. Note: "small" means that the tes charge does not exert large enough forces on the charpes that create the -field to cause the field to change noticeably when it is brought near the Having done all this preparation, you should be ready to discover how the net ber of lines endowed by a surface is related to the net charge endlosed by the surface 4 Draw the two-dimensional dosed surfacesin pencil on your diagram, above Some of them should enclose charge, and some should avoid enclosing charge 5. Draw at least one more closure that encloses charges, but zero in charge REALTIME PHYSICS: ELECTRICITY AND MAGNETISM o positive 2. Draw arrows on each of the lines indicating in which direction a small Question to Questio be on one the netch proportio INVEST You are wady to discover how the net number of lines enclosed by a surface related to the net charge enclosed by the surface. 6 Count the net lines of flux coming out of (leaving) each "surface." (Note: The ut number of lines is defined as the number of lines coming out of the sun face minus the number of lines going in.) 7. Fill in the table below for three different Flatland "surfaces." An elec (ie, no field, it if there condus Charge enclosed by the arbitrary surface Lines of flux in and out of the surface Lines Lines Une + - 1 Let's 3 black it. W 4 throu tor, is los Question 1-7: What is the apparent relationship between the net flux (net num- ber of lines) passing through an imaginary surface and the net charge enclosed by the two-dimensional "surface"? Explain, based on your simulated observations. Act Gauss' Law in Three Dimensions Qu cha If you were to repeat the simulated exploration you just performed in a three- dimensional space, what do you think would be the appropriate expression for Gauss' law? You will explore this in the next activity. WI dre tha Activity 1-5: Statements of Gauss' Law Question 1-4 Express the three-dimensional form of Gauss' law in words. Hints: What would be the three-dimensional equivalent of the closed curves you drew in steps (4) and (5)? Does it still make sense in three-dimensions to talk about the net number of lines coming out of a closed surface? DUO 28

Answer 1

arrow indicate positive test the dired change. 4 2-D enclosed surface CU 5 © Inet +q-=0 (1) line of flux o = q enclosed Eo to (2) surface en question no Co 3) line of flux & line of flux & line of flux & = 92 - 9 -- 0 of a surface Yo no ☺ enclosed by the Ans :- Gauss law states that flex through a close surface is proportional to the charge surface In (4) & (5) step we a sphere or eyclinder because it is Yes, it make sense in 3-D to talk about the het drauge no lines about of closed surface can consider to evaluate easy ho of coming