Applied Electricity

1The direction of force on a current-carrying conductor in a magnetic field is given by

2The back e.m.f. of a DC motor with supply 240 V, armature resistance 0.5 Ω and current 20 A is

3A transformer with more secondary turns than primary turns is a

4A step-down transformer has

5The rule used to find the direction of induced current in a generator is

6The law that says an induced current opposes the change producing it is

7The part of a d.c. motor that reverses the current in the armature every half turn is the

8The rule used to find the direction of the induced current in a generator is

9Laminating a transformer core reduces

10Carbon brushes in a DC motor