Lenz devised a rule to find out the direction of

The force on the wire is at right angles to both the direction on the magnetic field and the direction of the current. This is discovered by

The magnetic field produced near the current-carrying conductor is

The production of induced current in one coil due to production of current in neighboring coil is

A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. If it is 100% efficient, and the current in the secondary coil was 0.4 A then the current in the primary coil should be

In a D.C motor the coil in a magnet rotates maximum to about

In a transformer, the primary coil is connected to

Weak ionic current in our body that travels along the nerve can produce the

Electric motors works on the principle of

A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. The turns on its secondary coil should be

In transformer the changing current in primary coil induces changing magnetic field in