Answer:
a) The direction of electric field is downward for the positively charged bead. We consider the case only with gravitational force, without any electrostatic force. v^2 - u^2 = 2gs or, v^2 = 2x9.81x5 or, v = 9.9 m/s. But the given final speed of fall is 21m/s. This shows that the electrostatic and the gravitational force were acting in the same direction. So, electric field is downwards. b) acceleration due...
Explanation:
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