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Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative surface?

A) Tube of surface B) Tube of lines

C) Tube of force D) Tube of electricity

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Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative surface?

A) Tube of surface B) Tube of lines

C) Tube of force D) Tube of electricity

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