An inclined plane making an angle of 30° with the horizontal is placed in a uniform horizontal electric field of 200 \(\frac{N}{C}\) as shown in the figure. A body of mass of 1 kg and charge of 5 mC is allowed to slide down from rest at a height of 1m. If the coefficient of friction is 0.2, find the time taken by the body to reach the bottom.
[g = 9.8 m/s2; sin 30° = \(\frac{1}{2}\); cos 30° \(\frac{{\sqrt 3 }}{2}\)]
1
2.3 s
2
1.3 s
3
0.92 s
4
0.46 s