Electric Lines of Force
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Electric Lines of Force

Electric lines of force indicate the direction in which a positive test charge would move if it were placed in an electric field. The diagram on the left shows lines of force for two positive charges that repel each other. A positive test charge would be pushed away from both charges. The diagram on the right shows lines of force for two unlike charges that attract each other. A positive test charge would be pushed away from the positive charge and toward the negative charge.