QUESTION 9 2 points Save Answe Aconstart electric fied E-100 Niispresent thr out

Question

QUESTION 9 2 points Save Answe Aconstart electric fied E-100 Niispresent thr out aregion of space that includes the plane bonded by the x and y aces and the l esr-3 r andy-50cm. The electric through the plane's surtaconNx/C, is 25. O b.50. O G. 100. O d. 0.25 QUESTION 10 2 points Save Answer A charge of B0 pc is distrbuted unitomly on a spherical surtace (radius -20 cm, and a second charge of 30 pC is distibuted uniformly on a concentrie spharical surtace (radius -40 cm). he the magnitude of the electric field 5.0 cm from the center of the two surfaces O b. 11 N/C QUESTION 11 2 points Save Answer An astronaut is in an ai-metal chamber outside the space station when a solar storm results in the deposit of a large postive charge on the station. Which statement is correct? a. The astronaut must abandon the chamber immediately because the olectric feld insde the chamber is non-uniform D. The astronaut must abandon the chamber immediately to avoid being electrocuted c. The astronaut wu be sale ony t the is wearg a spacesun mace t nn-concketing matenals d. The astronaut does not need to worry the charge will remain on the outside surface e. The astronaut must abandon the chamber it the electric feid on the outside surface becomes greater than the braakdown fieid of a

Explanation / Answer

a) Area enclosed by the region = 0.3*0.5=0.15 m2k (vectrially along z axis)

electric field = 100 N/C i (vectorially along x axis)

Electric flux is given by dot product of the vectors

Therefore flux = 0.15i.100k = 0

Correct option is (e)

b)electric field at the point concerned = 9*109*8*10-12/0.052 + 9*109*3*10-12/0.052 =39.6 N/C

Correct option is (e)

c) Correct option is (c) . This is because if the astronaut is wearing a spacesuit made of conducting material, it will induce charge on the spacesuit and the astronaut will be electrocuted

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