The device used for producing electric current is called a

The phenomenon of electromagnetic induction is

Which of the following correctly describes the magnetic field near a long straight wire?

The essential difference between an $AC$ generator and a $DC$ generator is that

State whether the following statements are true $(T)$ or false $(F)$.
$(a)$ An electric motor converts mechanical energy into electrical energy.
$(b)$ An electric generator works on the principle of electromagnetic induction.

Imagine that you are sitting in a chamber with your back to one wall. An electron beam,moving horizontally from the back wall towards the front wall,is deflected by a strong magnetic field to your right side. What is the direction of the magnetic field?