Work, Power and EnergyHard
Question
A ring of radius R carries a charge + q A test charge - q0 is released on its axis at a distance√3 R from its centre. How much kinetic energy will be acquired by the test charge when it reaches the centre of the ring :-
Options
A.
B.
C.
D.
Solution
Apply C.O.M.E.
mv2 + (-q0) 
= 0 + (-q0) 
mv2 + (-q0) = 0 + (-q0) Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A crane lifts 300 kg weight from earth′s surface upto a height of 2m in 3 seconds. The average power generated by ...Two spheres of the same material have radii 1 m and 4m and temperatures 4000 K and 2000 K respectively. The ratio of the...A bullet of mass P is fired with velocity Q in a large body of mass R. The final velocity of the system will be -...A heavy body moving with a velocity 20 ms-1 and another small object at rest undergo an elastic collision. The latter wi...A body of mass 5kg has momentum of 10 kg m/sec. When a force of 0.2N is applied on it for 10 sec, the change in its kine...