Which one of the following statements regarding a charged in an electrostatic fi

Question

Which one of the following statements regarding a charged in an electrostatic field E is correct? when the particle moves in the direction of E its electrostatic potential energy increases. when the particle moves in the direction of E its electrostatic potential energy decreases as long as the location of the particle changes, its electrostatic potential energy will change (but we would need to know the sign of its charge to determine how the potential energy changes) more information is needed to determine the correct answer Which one of the following statements regarding a negatively charged particle Q(-) in an electrostatic filed E is correct? when the particle moves in the direction of E its electrostatic potential energy increases when the particle moves in the direction of E its electrostatic potential energy decreases more information is needed to determine the correct answer Which one of the following statements regarding the continuity of E is true? E will always be discontinuous at the surface of a conductor E can never be discontinuous at the surface of an insulator E will always be discontinuous at any surface (conductor or non-conductor) with a non-zero surface charge density sigma E will only be discontinuous at the surface of a conductor with a non-zero surface charge density sigma none of the above

Explanation / Answer

15.

Correct statement : C

Explanation: Electrostatic potential energy depends on the polarity of charge, as below statement shows:

U = q*E*x

Thus values of U is depend on value of charge q.

16:

Correct statement: A

Explanation:

U = q*E*x

As negative particle moves in the direction E values of U is positive.

17.

Correct statement: A

Explanation: Electric field is discontinuous at the surface of charge.

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