the charges show at the right are all in the same plane. given the polarity of o
ID: 1874565 • Letter: T
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the charges show at the right are all in the same plane. given the polarity of one charge deduce the polarities of the others Unit 10 Test #85 age 20. Physics 1102 4. The charges shown at the right below are all in the same plane. Given the polarity of one charge, deduce the polarities of the others. Given: Charge 1 is positive. POLARITIES 5. A solid conducting sphere of radius a carries a total charge of +6 d. Concentric with this sphere is a conducting hollow sphere of inner and outer radii b and c, respectively. The hollow sphere also carries a total charge of +6 uC. Determine the total charge on the inner surface of the outer sphere (a distance b from the center of the system): A. 0 B.-6 pC C. 46 HC D. +12 uCE.-12 C 6. The charge at A is-4.0 mC and the charge at B is+4.0 mC (mC What is the electrostatic potential at the center of the square? millicoulomb). 1.0m 1.0 m A, 5.1 x 107 V D. 1.4 x 108 V B.1.0+107 V E. Zero C.3.6 x 107 V The diagram shows electric field lines due to 2 charged spheres. The direction of the electric force on a negative point charge placed at point A 1, E B. E. the force is zero IreviExplanation / Answer
5) B) -6 micro C
to make electric field in between r > b and r < c, -6 micro C charge is induced on inner surfca eof the haoolow sphere.
6) E) zero
distance between corner to each center, d = sqrt(2)*1/2
= 0.707 m
so, Net potential, Vnet = VA + VB
= k*qA/d + k*qB/d
= 9*10^9*(-4*10^-3)/0.707 + 9*10^9*4*10^-3/0.707
= 0 V
7) D) downward
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