Question

A charge moves from point A to point B in an electric field. What is true in general about the energy of the charge?

A. The sum of the potential energy and the kinetic energy at A is the same as that at B.
B. The sum of the potential energy and the kinetic energy at A is greater than that at B.
C. The sum of the potential energy and the kinetic energy at A is less than that at B.
D. The sum of the potential energy and the kinetic energy at B fluctuates.

:)

Answer 1

Option D - The sum of the potential energy and the kinetic energy at B fluctuates.

Explanation

An electric field is a region of a charged particle within which a force is exerted on a particle by another particle, attracting or repelling. It is an electric property that associates with each point in space when the charge is present in any form and the direction of the force that is exerted on a negative charge is opposite that which is exerted on a positive charge. The direction of the force is on the positive because of the electric field has both magnitude and direction.

Answer 2

Since there is no frictional loss or any other type of resistive loss in this motion of charge from one position of electric field to other position. So here we can say that total mechanical energy of the charge system will remain conserved always

So here we can say that mechanical energy is sum of kinetic energy and electrostatic potential energy which will remains conserved always

So here correct answer will be

A). The sum of the potential energy and the kinetic energy at A is the same as that at B.

`KE + PE = constant`