A charge of9.00 uC is at the origin and a charge of -10 uC isat the point (0,4.0

Question

A charge of9.00 uC is at the origin and a charge of -10 uC isat the point (0,4.00)m Find the electric potential at (3.00,0)m, assuming theelectric potential is zero at infinity. k=8.99 x 109V=kq/r Find the work necassary to bring a 2.00 uC charge frominfinity to the point ( 3.00,0)m A charge of9.00 uC is at the origin and a charge of -10 uC isat the point (0,4.00)m Find the electric potential at (3.00,0)m, assuming theelectric potential is zero at infinity. k=8.99 x 109V=kq/r Find the work necassary to bring a 2.00 uC charge frominfinity to the point ( 3.00,0)m

Explanation / Answer

Potential V = k[q1/r1 +q2/r2]      = (8.99*109Vm/C)[(9*10-6C)/(3m) +(-10*10-6C)/(5m)]   = 8.99kV

Work necessary W = Vq       =(8.99*103V)(2*10-6C)       = 8.99mJ

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