Question: Two point charges q A = 3 ?C and q B = ?3 ?C are located 20 cm apart in vacuum. (a) What is the

Two point charges qA = 3 ?C and qB = ?3 ?C are located 20 cm apart in vacuum.

(a) What is the electric field at the midpoint O of the line AB joining the two charges?

(b) If a negative test charge of magnitude 1.5

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