Three point charges,two positive and one negative,each having a magnitude of 20 $\mu$C are placed at the vertices of an equilateral triangle (30 cm on a side).What is the magnitude of the electrostatic force on one of the positive charges?
A)69 N
B)40 N
C)80 N
D)57 N
E)20 N

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The Answer of Three point charges,two positive and one negative,each having a magnitude of 20 $\mu$C are placed at the vertices of an equilateral triangle (30 cm on a side).What is the magnitude of the electrostatic force on one of the positive charges?
A)69 N
B)40 N
C)80 N
D)57 N
E)20 N

Three Point Charges,two Positive and One Negative,each Having a Magnitude μ\muμ

Three Point Charges,two Positive and One Negative,each Having a Magnitude $\mu$