EC > GATE 2017 SET-2 > Electrostatics
An electron (q1) is moving in free space with velocity 105m/s towards a stationary electron (q2) far away. The closest distance that this moving electron gets to the stationary electron before the repulsive force diverts its path is...×10-8 m. [Given, mass of electron m=9.11×10-31 kg. charge of electron e=-1.6×10-19C., and permittivity ε0=(1/36π)×10-9F/m]
Correct : 5.05
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