NCERT Exercise 1.6 - Electric Charges and Fields
Question: Four point charges qA = 2 μC, qB = –5 μC, qC = 2 μC, and qD = –5 μC are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of 1 μC placed at the centre of the square?
Answer: The net force on the 1 μC charge at the centre of the square is **zero**. By symmetry, qA and qC (both +2 μC, diagonally opposite) produce forces that cancel each other. Similarly, qB and qD (both ...
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