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Q. 6

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 736

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Short Answer

An electron is released from rest at in the potential shown in Figure Q26.6. Does it move? If so, to the left or to the right? Explain.

The electron makes a Rightward movement.

See the step by step solution

Step by Step Solution

Step 1 : Given information and formula used    

Given :

Initial position of electron :

Graph -

Theory used :

Electric field is the negative slope (“derivative” or “gradient”) of the potential.

Potential energy is related to electric potential by the charge. It only makes sense if you know the sign & magnitude of the test charge you want to use.

Step 2 : Determining the direction of the electron 

The electron makes a Rightward movement.

Because the electric field is the inverse of the electric potential's slope, the electric field will be nonzero and pointing to the left at .

As a result, the electron will experience a net force to the right and accelerate in that direction.

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