Out of an A.C. generator and a D.C. generator:

(a) which one uses a commutator (split rings)?

(b) which one uses slip rings?

A charged particle enters at right angles into a uniform magnetic field as shown:

What should be the nature of charge on the particle if it begins to move in a direction pointing vertically out of the page due to its interaction with the magnetic field?

Name the device which converts mechanical energy into electric energy.

Name the phenomenon which is made use of in an electric generator.

Name the rule which gives the direction of induced current.