If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region of electric field of 80NC⁻¹ in the same direction as the velocity of mass then the velocity of mass after 3s in the region will be

Options

(a) 40ms⁻¹
(b) 44ms⁻¹
(c) 56ms⁻¹
(d) 80ms⁻¹

Correct Answer:

56ms⁻¹

Explanation:

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