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电场线是描述电场的一种形式,它能把无形的电场直观、形象地表现出来,为分析电场中的物理量提供了简单直接的途径． 1．比较电场强度的大小电场线的疏密表示电场的强弱,电场线密的地方场强大,电场线疏的地方场强小．
The electric field line is a form of describing the electric field. It can visualize the invisible electric field and provide a simple and direct way to analyze the physical quantity in the electric field. 1. The density of the electric field lines that compares the strength of the electric field indicates the strength of the electric field. The electric field is dense in the local field where the electric field is dense, and the field strength of the electric field is sparse.