Two positive charges value +Q are held in place and cannot move from the location shown below. A negative charge q is only allowed to move along the X axis and released from rest. Which of the following will happen?

The charge q will move in the direction of increasing X values

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The charge q will not move

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The charge q will move in the direction of decreasing X values

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The charge q will move with oscillatory motion

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Solution

The correct option is D The charge q will move with oscillatory motion
The charge q will begin to move towards -X direction under force of attraction from the two positive charges. It will tend to move towards -X past the +Q charges, experience attractive force towards +X that time, and then again move towards +X direction. This way the motion of the charge q would be oscillatory.

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