Which field is a vector field defined by the electric force on a unit charge in space?

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Multiple Choice

Which field is a vector field defined by the electric force on a unit charge in space?

Explanation:
The electric field is the force per unit charge that would be experienced at a point in space. It is a vector field because at every location it has both a magnitude and a direction corresponding to the force on a test charge. For a unit charge, the force equals the field itself since F = qE and q = 1, so F = E. This directly ties the electric field to the electric force on a unit charge. Magnetic field relates to forces on moving charges and is not defined simply as force per unit charge for a stationary test charge. The gravitational field is analogous but refers to force per unit mass, not charge. A scalar field, by contrast, has magnitude only and no direction, so it isn’t a vector field.

The electric field is the force per unit charge that would be experienced at a point in space. It is a vector field because at every location it has both a magnitude and a direction corresponding to the force on a test charge. For a unit charge, the force equals the field itself since F = qE and q = 1, so F = E. This directly ties the electric field to the electric force on a unit charge.

Magnetic field relates to forces on moving charges and is not defined simply as force per unit charge for a stationary test charge. The gravitational field is analogous but refers to force per unit mass, not charge. A scalar field, by contrast, has magnitude only and no direction, so it isn’t a vector field.

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