Question

Assertion (A): Work done in moving a charge around a closed path, in an electric field is always zero. Reason (R): Electrostatic force is a conservative force.

A uniform electric field of magnitude 500 N C⁻¹ points along the +x direction. A small point charge of +2 μC is placed at the origin. The force experienced by the charge is:

An electron falls through a distance of 1.5 cm in a uniform electric field of magnitude 2.0 × 10⁴ N C⁻¹ [Fig. 1.10(a)]. The direction of the field is reversed keeping its magnitude unchanged and a proton falls through the same distance [Fig. 1.10(b)]. Compute the time of fall in each case. Contrast the situation with that of 'free fall under gravity'.

Figure 1.30 shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?