Moving Charges & Magnetism | Case Study-01 All the best! 1. If the speed of the electron is now doubled to 2vo. The radius of the circle will change to- (A) 4ro (B) 2ro (C) ro (D) ro/2 Option (A) Option (B) Option (C) Option (D) None 2. If vo becomes 2vo, then the time required for one revolution of the electron will change to- (A) 4To (B) 2To (C) To (D) To/2 Option (A) Option (B) Option (C) Option (D) None 3. A charged particle is projected in a magnetic field B = (2î + 4ĵ) x 102 T. The acceleration of the particle is found to be a = (xî + 2ĵ) m/s2. The value of x (in m/s2) is- -2 2 -4 4 None 4. If the given electron has a velocity not perpendicular but obliquely to B, then trajectory of the electron is- straight line circular helical zig-zag None 5. If this electron of charge e is moving parallel to the uniform magnetic field with constant velocity v, the force acting on the electron is- eBv eB/v B/ev zero None 1 out of 5 Time's up
