PDF chapter test TRY NOW

1. Which sources produce alternating current? 
 
Answer variants:
DC generator
Hydro electric Power plant
Solar cell
Battery
Thermal power generator
Thermocouple
AC generator
a.
 
b.
 
c.
  
2. Choose the correct option.
  
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each