Physics · Force on a moving charge in uniform magnetic and electric fields
Pick up the correct statements: This question has multiple correct options
Pick up the correct statements: This question has multiple correct options
- A. The changing (with time) magnetic field need not be in existence at the location of induced electric field.
- B. A uniform magnetic field increasing at constant rate, induces an electric field which is constant and non conservative
- C. Non zero force exerted by uniform and constant magnetic field on a moving charged particle does no work but always changes momentum of the particle.
- D. All the above statements are wrong.
Step-by-step solution
According to Faraday's law, a time-varying magnetic field induces an electric field even at points where the magnetic field itself is zero, as long as the magnetic flux through a loop changes. For example, outside a solenoid with changing current, the induced electric field exists while the magnetic field is confined inside. Thus, statement A is correct.
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