Question

2. The image shown is taken from the text book why n danger a) The electric feld could have broken down and her hair air surrounding her and she would have b) b) The electric field was about to cause a breakdown in the suffocated in the surrounding air and an upward streamer lightning bolt from a pessing cloud c) The electric field surrounding her would soon attract a downward d) The electric field was a would have resulted 8. To calculate the flux through a curved surface, a) the area vector has to be perpendicular to the surface somewhere b) you must divide the surface into pieces that are tiny enough to be almost f c) the surface must be spherical d) the surface cannot be curved very much; then you can treat it as e) the flux through a highly curved surface cannot be calculated 9. Which statement is correct? a) The flux through a closed surface is always positive b) The flux through a closed surface is always negative. c) The sign of the flux through a closed surface depends on an arbitr vector choice of sign for the surface d) inward flux through a closed surface is negative and outward flux is positive e) Inward flux through a closed surface is positive and outward flux is negative 10. A point charge is placed at the center of a spherical Gaussian surface. The electric flux O, is changed if which of the following events occur? a) the sphere is replaced by a cube of the same volume b) the sphere is replaced by a cube of one-tenth the volume c) the point charge is moved off center (but still inside the original sphere) d) the point charge is moved to just outside the sphere e) a second point charge is placed just outside the sphere

Answer 1