A charged particle of mass 1.0 g is suspended through a silk thread of length 40 cm in a horizontal electric field of intensity 4.0×104NC−1 as shown in the figure. If the particle stays in equilibrium at a distance of 24 cm from the wall, find the net charge on the particle?
q = 1.8 × 10–7 C
q = 3.2× 10–7 C
None of these
q = –3.2× 10–7 C
An electron is fixed at the origin as shown. What is the electric field at A?
- 3.6×10−19 N/C ^i
- −3.6×10−10 N/C ^i
- 3.6×10−10 N/C ^i
- None of these
One can add electric field and gravitational field.
The electric charge in uniform motion produces
Neither electric nor magnetic field
Both electric and magnetic field
An electric field only
A magnetic field only
Cannot be estimated