The output from an a.c. generator is connected to a lamp. The generator coil is turned at a steady rate, causing the lamp to flash twice each second. The coil is then turned at half this rotational rate. What happens to the lamp’s maximum brightness, and how many times per second does the lamp flash?
- Abrightness decreases; 1
- Bbrightness decreases; 4
- Cbrightness does not change; 1
- Dbrightness does not change; 4