Questions
A mass m = 20 g has a charge q = 3.0mC. It moves with a velocity of 20 m/s and enters a region of electric field of 80 N/C in the same direction as the velocity of the mass. The velocity of the mass after 3 seconds in this region is
detailed solution
Correct option is B
a=QEm=3×10−3×8020×10−3=12m/sec2Hence v=u+at⇒v=20+12×3=56 m/sTalk to our academic expert!
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In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as WA, WB and WC , then
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