Question

In mutual induction, there is ___.

• A. an induced magnetic field in one coil due to a direct current in the neighbouring coil
• B. an induced current in one coil due to an alternating current in the neighbouring coil
• C. an induced capacitance in one coil due to an alternating current in the neighbouring coil
• D. strong magnetic field induced in the primary coil due to a direct current in the secondary coil

Answer 1

The correct option is B

an induced current in one coil due to an alternating current in the neighbouring coil

The coil to which we give current for the production of magnetic field is the primary coil and the coil in which induced emf is generated is the secondary coil.
When the strength or direction of the current in the primary coil changes, the magnetic flux around it changes. As a result, an emf is induced in the secondary coil. This induced emf causes a current to flow called induced current. This phenomenon is the mutual induction.