Fig. shows the electric field lines arround three point charges A, B and C.
Which charges are positive?

Fig. shows the electric field lines arround three point charges A, B and C. Which charge has the largest magnitude?why?

Fig. shows the electric field lines arround three point charges A, B and C. In which region or regions of the picture could the electric field be zero? Justify your answer.

Sketch the electric lines of force due to point charges q < 0

Sketch the electric lines of force due to point charges q > 0

Show that the electric field due to a point charge is conservative?

Obtain expression for electric field due to a point charge

A point charge q is placed at the origin. How does the electric field due to the charge vary with distance r from the origin?

Is the electric field due to a system of charges with net charge zero necessarily zero?

Is the electric field due to a system of charges with net charge zero necessarily zero?