Question

An experiment is performed to detect induced electric current, as shown in figure bar magnet is moving towards coil. An ammeter is connected to the coil. Choose the correct option to produce induced electric current.

I. Toward the coil with constant speed

II. Toward the coil with increasing speed

III. Away from the coil with constant speed

• A. I or II only
• B. I or III only
• C. II or III only
• D. None
• E. I or II or III

Answer 1

Answer: (E)

I or II or III

A current is induced in a coil when magnetic flux linked with the coil is changed . In all the three conditions given in the question magnetic flux linked with coil is changing therefore induced current will be produced in coil.It does not matter that magnet is coming toward or going away from coil with constant speed or increasing speed ,the flux will change in all three conditions.