How do you know the direction of electric force?

electric field is always directed from positive to negative potential . if your test charge is move away from positive potential then force is in the direction of electric field and if test charge is moving towards positive potential then force in direction opposite to electric field.

What is direction of electric charge?

The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.

When is work done on a charge negative?

If the positive charge moves in the direction of the field, the field does positive work on the charge. If the negative charge moves opposite the direction of the field, the field does positive work on the charge. If the negative charge moves in the direction of the field, the field does negative work on the charge.

What does negative charge indicate?

When an object has a positive charge, it has more protons than electrons. Therefore, when an object has a negative charge, then that object contains more electrons than protons.

How do you determine direction in Coulomb’s law?

The direction of the force vector depends on the sign of the charges. If the charges are the same, the force points away from the other charge. If the charges have different signs, the force points toward the other charge((Figure)).

Why is electric field away from positive charge?

Electric field line is supposed to be the trajectory of a “test charge” (a unit positive charge) in a given electric field. Since like charges repel each other, the test charge will move away from the positive charge, so the field lines move away from a positive charge.