A student connects a 25 W – 220 V bulb and a 100 W – 220 V bulb first in series and then in parallel to the same 220 V supply. Without performing explicit numerical calculations, analyse the two situations.
(a) In the series arrangement, which bulb will glow brighter? Give a qualitative explanation referring to current, resistance and power relationships.
(b) In the parallel arrangement, which bulb will glow brighter? Explain your reasoning.