PLS EXPLAIN...the assumption that tht wire is infinitely long is vry impt. without this assumption, we cannot take electric field to b perpendicular to the curved part if the cylindrical gaussian surfaace.why...?
PLS EXPLAIN...
the assumption that tht wire is infinitely long is vry impt. without this assumption, we cannot take electric field to b perpendicular to the curved part if the cylindrical gaussian surfaace.why...?