True or false: electric field lines
Exercise and reference answers
- Questions
- Statement is true
- Yes
- Statement
- The tangent to a field line gives the field direction there.
- Statement is true
- Yes
- Statement
- Field lines crowd together where the field is strong.
- Statement is true
- Yes
- Statement
- Field lines are far apart where the field is weak.
- Statement is true
- No
- Statement
- Field lines show the speed of a charge, not the field direction.
- Statement is true
- No
- Statement
- The spacing of field lines carries no information.
Explanation
A field line's tangent gives the direction, and their crowding gives the strength. Source: syllabus Physics Part I, Ch 1 Electric Charges and Fields.