Question

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4. Two point charges + 3 °C and -9 °C are located at A and B respectively 20 cm
apart in vacuum. (i) What is the electric field at the midpoint 0 of the line AB
joining the two charges ? ( ii ) If a negative test charge of magnitude 2 nC is
placed at the point 0, what is the force experienced by the test charge ?
Ans: (i) 10.8 x 10°NC-' along OB ( ii) 0.0216 N along OA​

Answer 1

Explanation:

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