Electric Field Lines (MC) Due this Friday, Jan 26 at 11:59 pm (EST) The electric

Question

Electric Field Lines (MC) Due this Friday, Jan 26 at 11:59 pm (EST) The electric field lines due to a charge distribution have the following characteristics: True Field lines always have a single unique direction at every point and therefore two field lines cannot cross each other. False The number of lines per unit area is proportional to the magnitude of the electrostatic force per unit charge placed at that position. FalseThe electric field is zero everywhere inside a conductor even when a static charge is on the surface FalseElectric field lines always begin on a negative point charge and are directed away from that charge Submit Answer Incorrect. Tries 9/10 Previous Tries This discussion is closed.

Explanation / Answer

1. At any point direction of field is unique, so the field lines donot cross each other . So, True.

2. The magnitude of the field at a point is proportional to the number of the field lines per unit area passing through that region. So, number of field lines per unit area and magnitude of electrostatic force per unit charge placed at that position are both proportional to each other. So, True.

3. The net charge enclosed in a small volume at this place inside a conductor is zero since all the charge is at surface. So, by Gauss law, the elctric field is zero everywhere inside a conductor even when a static charge is on the surface. So, True.

4.Electric field lines always begin on a positive point charge and are directed away from that charge.So, False.

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