Question

2. How do you test for a charge. ​

Answer 1

Answer:

Asking for the direction of the field at a particular point is the same as asking for the direction of the force experienced by a positive test charge placed at that point. A test charge is a charge with a magnitude so small that placing it at a point has a negligible affect on the field around the point.

Answer 2

Answer:

• Asking for the direction of the field at a particular point is the same as asking for the direction of the force experienced by a positive test charge placed at that point.
• A test charge is a charge with a magnitude so small that placing it at a point has a negligible affect on the field around the point.