Which of the following statement is true

  • A

    The presence of a large magnetic flux through a coil maintains a current in the coil if the circuit is continuous

  • B

    A coil of a metal wire kept stationary in a non-uniform magnetic field has an $e.m.f.$ induced in it

  • C

    A charged particle enters a region of uniform magnetic field at an angle of $85^\circ $ to the magnetic lines of force; the path of the particle is a circle

  • D

    There is no change in the energy of a charged particle moving in a magnetic field although a magnetic force is acting on it

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