The figure that follows shows two charges of -q arranged symmetrically about the

Question

The figure that follows shows two charges of -q arranged symmetrically about the y-axis. Each produces an electric field at point P.

(a) Are the magnitudes of the fields equal? Why or why not?

(b) Does each electric field point toward or away from the charge producing it? Why or why not?

(c) Is the magnitude of the net electric field equal to the sum of the magnitudes of the two field vectors (that is equal to 2E)? Why or why not?

(d) Do the x-components of the two fields add or cancel? Why or why not?

The figure that follows shows two charges of -q arranged symmetrically about the y-axis. Each produces an electric field at point P. Are the magnitudes of the fields equal? Why or why not? Does each electric field point toward or away from the charge producing it? Why or why not? Is the magnitude of the net electric field equal to the sum of the magnitudes of the two field vectors (that is equal to 2E)? Why or why not? Do the x-components of the two fields add or cancel? Why or why not? Do the y-components of the two fields add or cancel? Why or why not?

Explanation / Answer

1) Yes
   because they are at the same distance

2) Towards
    This is because both charges are negative so electric field is produced towards the charge

3) NO
    The two fields will be vectorially added they are not in teh same direction.

4) Yes
   Because their x-components are in opposite directions

5) No
   Y-components actually add up in this case as both are downwards.

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