Given that two identical coils, one of copper and another of aluminium are rotated with the same angular speed in an external magnetic field, which of the following statements is true?

Induced emf will be same in both the coils whereas induced current will be more in copper coil.

The correct answer is Option (4) → Induced emf will be same in both the coils whereas induced current will be more in copper coil.

The induced emf in a rotating coil depends only on external magnetic field, angular speed, number of turns, and area of the coil. Since the coils are identical and rotated with the same speed in the same field, the induced emf will be the same in both coils.

The induced current depends on the resistance of the coil. Copper has lower resistivity than aluminium, hence the copper coil allows more current.

Answer: Induced emf will be same in both the coils whereas induced current will be more in copper coil.