A negative test charge experiences a force to the right as a result of an electric field. Which is the best conclusion to draw based on this description?
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The electric field points to the left because the force on a negative charge is opposite to the direction of the field.
The electric field points to the right because the force on a negative charge is in the same direction as the field.
No conclusion can be drawn because the sign of the charge creating the field is unknown.
No conclusion can be drawn because the amount of charge on the test charge is unknown.

The correct option is (a).

Explanation:

We have, a negative test charge experiences a force to the right as a result of an electric field. The electric force acting on a charged particle is given by :

F = qE

q is charged particle, E is electric field

The direction of electric force is in the direction of electric field. For a negative charge, the electric field points to the left because the force on a negative charge is opposite to the direction of the field.

a. are

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