Physics · Motion in a Plane and Electrostatics
Three identical conducting balls A, B, and C, each of mass m, are projected at an angle θ to the horizontal with initial speed v in a region with a uniform downward electric field E along with gravitational field g. Ball A is positively charged, B is uncharged, and C is negatively charged. Rank the horizontal ranges R of these three balls in increasing order.
- 1RC < RB < RA
- 2RA = RB < RC
- 3RB < RC < RA
- 4RA < RB < RC✓
Correct answer
RA < RB < RC
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