The brighter the bulb, the higher is its wattage and hence more is the electricity consumed by it.
Statement 1: It is observed that sometimes an incandescent bulb glows brighter and sometimes it glows dim.
Statement 2: Glowing brighter and dimmer depends on heating effect of current. More current produces more heating effect making the bulb glow brighter and vice-versa.
An electric bulb is rated (60W, 220 V). If it is operated at 110 V, then find the power consumed by it.