An uniform electric field E exists along positive x-axis. The work done in moving a charge 0.5 C through a distance 2 m along a direction making an angle 60° with x-axis is 10 J. Then the magnitude of electric field is
Options:
(a) `5Vm^(-1)`
(b) `2Vm^(-1)`
(c) `sqrt5 Vm^(-1)`
(d) `20Vm^(-l)`