Bulbs in Series and Parallel#!#Problems based on brightness

Problems Based on Trigonometric Series

When bulbs are connected to the same source, the brightness of bulb connected in parallel is "________" then the brightness of identical bulbs connected in series.

A capacitor, an inductor and an electric bulb are connected in series to an AC supply of variable frequency. If the frequency of the supply is increased gradually, what will happen to brightness of bulb.

A capacitor, an inductor and an electric bulb are connected in series to an AC supply of variable frequency. If the frequency of the supply is increased gradually, what will happen to brightness of bulb.

The two electric bulbs of same power are connected in parallel circuit. If one bulb is glowing and then another bulb is switched on, then brightness of the first bulb increases, decreases or remians unchanged. Expalin.

How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?

In a parallel circuit of bulbs

In a parallel circuit of bulbs