Homework Answers
potential at corner
V1 = k ( q1 /r1 + q2 / r2 + q3/ r3)
V1 = 9* 10^9* 1.6* 10^-19* ( 1 /0.01 + 1 / 0.01 + 1 / 0.01sqrt(2))
V1 = - 3.898*10^-7 V
potential at center
V2 = 3 k q / r = 3* 9* 10^9* 1.6* 10^-19 / (0.01 / sqrt(2))
v2 = - 6.11* 10^-7 V
net workdone
W = q ( V2 - V1)
W = - 1.6* 10^-19* ( - 6.11 + 3.898)* 10^-7
W = 3.539* 10^-26 J
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