True or false on static electricity

Exercise and reference answers

Questions

1. Statement is true

   No

   Statement

   Two field lines can cross at a point.

2. Statement is true

   No

   Statement

   Electrostatic field lines form closed loops.

3. Statement is true

   Yes

   Statement

   A dipole has a total charge of zero.

4. Statement is true

   No

   Statement

   A dipole therefore has no field at all.

5. Statement is true

   Yes

   Statement

   Gauss law holds for any closed surface.

6. Statement is true

   Yes

   Statement

   Zero net flux means zero charge inside.

Instructions

Decide whether each statement is true or false.

Explanation