☰
✕

Electric Charges and Fields
Question
Wired Faculty App

A point charge Q is placed at the mid-point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to
  • –q
  • +q
  • –2q
  • + 4q

Answer

A.

–q

Sponsor Area

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?