Physics · Magnetism and Electromagnetic Induction
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If we give a direct current to the transformer’s primary coil, then there will be:
- A
No emf produced in the secondary coil
- B
More emf in the secondary coil
- C
Equal emf produced in the secondary coil
- D
Less emf produced in the secondary coil
A direct current will produce no varying magnetic field and therefore, no emf will be generated in the secondary coil.
A direct current will produce no varying magnetic field and therefore, no emf will be generated in the secondary coil.
A varying or alternating current (AC) produces a time-varying magnetic field. In an AC circuit, the direction and magnitude of the current continuously change over time, which results in a magnetic field that alternates in direction. This time-varying magnetic field is one of the essential factors in the operation of devices like transformers and induction motors.
No emf is produced at all as this is not Alternating Current.
No emf is produced at all as this is not Alternating Current.
Tagged under Physics · Magnetism and Electromagnetic Induction · 2019