As you can see, the answer to part (a) is incorrect , while the answer to part (

Question

As you can see, the answer to part (a) is incorrect, while the answer to part (b) is correct. Please answer part (a). The answers I've submitted that were counted by WebAssign as incorrect are: 5.63e4 and 1.13e5 so if any of these are your final answer for part (a), you're incorrect.

Four point charges are located at the corners of a square. Each charge has magnitude 2.50 nC and the square has sides of length 4.00 cm. Find the magnitude of the electric field (in N/C) at the center of the square if all of the charges are positive and three of the charges are positive and one is negative HINT (a) all the charges are positive 1.13e5 X N/C (b) three of the charges are positive and one is negative 5.6e4

Explanation / Answer

Answer for first is zero . As all charges are equal , positive and equidistant from centre, the electric field by diagonally opposite charges will cancel each other resulting in zero field at centre

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