An ocean liner is cruising at 10 meters/second and is about to approach a stationary ferryboat. A parcel is released from the oc
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Answer:
By a positive charge
Explanation:
The electric field is a vector consisting of a magnitude and a direction.
- The magnitude of the field depends on the configuration of the field: for example, for the electric field produced by a single point charge, it is
where k is the Coulomb's constant, q is the magnitude of the charge, r is the distance from the charge.
- The direction of the field corresponds to the force that a positive charge would feel in that field. For example, the electric field produced by a single-point positive charge points away from the charge itself: this is because a positive test charge placed in this field would feel a repulsive force, so it would move away from the source of the field. Vice-versa, the electric field produced by a single-point negative charge points towards the charge itself: this is because a positive test charge placed in this field would feel an attractive force, so it would move towards the source of the field.