Q. Which of the following statements are correct?

1. Change in magnetic field produces induced current.
2. Flow of current in a conductor produces magnetic field.
3. Magnetic field related to a coil can be produced by motion between conductor and coil.

Select the correct option from the codes given below:
Answer: 1, 2 & 3
Notes: All three statements are correct. A changing magnetic field induces current (Faraday’s Law), current in a conductor produces a magnetic field (Ampere’s Law), and a magnetic field in a coil is generated by motion between conductor and coil (electromagnetic induction). These are fundamental laws of electromagnetism used widely in technology and engineering.