True or false: fields and forces

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The electric field is defined using a small positive test charge.

2. Statement is true

   Yes

   Statement

   The field of a point charge falls off as the inverse square of r.

3. Statement is true

   No

   Statement

   The electric field is a scalar quantity.

4. Statement is true

   Yes

   Statement

   The field points inwards toward a negative charge.

5. Statement is true

   Yes

   Statement

   The field obeys the superposition principle.

Explanation