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10 Question-Answer on force on moving charge 1.        The mass of proton is 1847 times that of electron. If an electron and a proton are injected in a uniform electric field at right angle to the direction on the field, with the same kinetic energy, then (a)     The proton trajectory will be less curved than that of electron (b)    Both the trajectories will be straight (c)     Both the trajectories will be equally curved (d)    The electron trajectory will be less curved than that of proton Ans: ( c) 2.        The frequency of charged particle, moving at right angle to the magnetic field, is independent of (a)     The radius of circular trajectory (b)    The speed of particle (c)     Both ‘a’ and ‘b’ (d)    The magnetic induction B. Ans: ( c) 3.        A beam of protons is m...