Physics
WAEC 2022
Which of the following statements about electric potential energy is not correct?
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A.
The electric potential energy of a positively charged particle increases when it moves to a point of higher potential
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B.
The electric potential energy of a negatively charged particle increases when it moves to a point of lower potential
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C.
The electric potential energy of a positively charged particle decreases when it moves to a point of higher potential
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D.
The work done in taking a charged particle around a closed path in an electric field is zero.
Correct Answer: Option B
Explanation
The potential energy for a positive charge increases when it moves against an electric field
And decreases when it moves with the electric field;
The opposite is true for a negative charge. Unless the unit charge crosses a changing magnetic field, its potential at any given point does not depend on the path taken.
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