A negative point charge is in an electric field created by a positive point charge.Part AWhich of the following is true?The field points away from the positive charge, and the force on the negative charge is in the opposite direction to the field.The field points away from the positive charge, and the force on the negative charge is in the same direction as the field.The field points toward the positive charge, and the force on the negative charge is in the same direction as the field.The field points toward the positive charge, and the force on the negative charge is in the opposite direction to the field.
Question
A negative point charge is in an electric field created by a positive point charge.Part AWhich of the following is true?The field points away from the positive charge, and the force on the negative charge is in the opposite direction to the field.The field points away from the positive charge, and the force on the negative charge is in the same direction as the field.The field points toward the positive charge, and the force on the negative charge is in the same direction as the field.The field points toward the positive charge, and the force on the negative charge is in the opposite direction to the field.
Solution
The correct answer is: The field points away from the positive charge, and the force on the negative charge is in the same direction as the field.
Here's why:
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The direction of an electric field is defined as the direction that a positive test charge would move if it was dropped in the field. Therefore, the electric field created by a positive charge always points away from the charge.
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The force experienced by a charge in an electric field is given by F = qE, where F is the force, q is the charge, and E is the electric field. If the charge q is negative, then the force F is in the opposite direction to the electric field. However, since the electric field points away from the positive charge, the force on the negative charge is in the same direction as the field.
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