can you plesase show work A small glass bead has been charged to 1.9 nC. What is

Question

can you plesase show work

A small glass bead has been charged to 1.9 nC. What is the strength of the electric field 2.0 cm from the center of the bead? Four 2.0-mu C point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. What Is the electric potential (relative to infinity) at the midpoint of the rectangle A spherical insulator of radium 6 mm carries a total charge of 14 nC. The charge is uniformly distributed throughout the volume of the insulator. What is the magnitude of the electric field at 3 mm from the center of the sphere?

Explanation / Answer

4)

q = charge on bead = 1.9 x 10-9 C

r = distance = 2 cm = 0.02 m

E = electric field = k q / r2 = (9 x 109) (1.9 x 10-9 ) / (0.02)2 = 42750 N/C = 4.3 x 104 N/C

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