Are Electric Force And Field Aligned?
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Electric Field Direction | Electric Charge, Field, And Potential | Physics | Khan Academy
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What Is The Direction Of Electric Field Lines And Electric Force?
The direction of electric field lines and electric force is a fundamental concept in electromagnetism. Electric field lines are imaginary lines that represent the direction and strength of the electric field at various points in space. They always point away from a positive charge and towards a negative charge. This directional pattern provides a visual representation of how electric charges interact with each other.
To elaborate, electric fields originate at positive charges, which are sources of the field, and extend outward in all directions. This outward flow indicates that a positive test charge placed at any point in the field would experience a repulsive force if it is also positively charged. Conversely, electric field lines terminate at negative charges, as these are the sinks or destinations of the field lines. This implies that a positive test charge placed near a negative charge will experience an attractive force due to the direction of the electric field lines.
In summary, understanding the direction of electric field lines and the associated electric force is crucial for comprehending how electric charges interact and is a foundational concept in the study of electromagnetism.
Why Is Electric Force Opposite To Electric Field?
The direction of the electric force experienced by an electron is in the opposite direction to the electric field it is placed in. This phenomenon arises because electrons possess a negative electric charge. When an electron is subjected to an electric field, it experiences a force that points in the direction opposite to the orientation of the electric field. This opposition in direction occurs due to the interaction between the negative charge of the electron and the electric field’s direction. As a result, the electron undergoes acceleration that aligns with the reversed direction of the electric field. This fundamental principle helps us understand the behavior of charged particles in electric fields, and it plays a crucial role in various aspects of physics and technology.
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Therefore the field and force are always pointing the same way at a positive charge and opposite at a negative charge. It is pure convention.Electric field lines always point away from a positive charge and towards a negative point. In fact, electric fields originate at a positive charge and terminate at a negative charge.Since the electron has a negative charge the direction of the force on the electron (and also the acceleration) is opposite the direction of the electric field.
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