Rheostat
Rheostat:
1. Connect the battery and a test bulb (40W) as shown in the figure.
2. The function of the rheostat is normal if the intensity of illumination changes smoothly, without flashing or flickering, when the rheostat is operated.
1. Connect the battery and a test bulb (40W) as shown in the figure.
2. The function of the rheostat is normal if the intensity of illumination changes smoothly, without flashing or flickering, when the rheostat is operated.