How is the relative strength of a magnetic field shown around a magnet?

Why is the metallic body of electrical devices connected to the earth wire?

What is the advantage of the third wire of earth connection in domestic appliances?

Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Fleming's left-hand rule help us to find the direction of the force acting on the current-carrying conductor?

In which of the following cases will maximum electric current be induced in the loop?

The phenomenon of electromagnetic induction is: