Two identical 60 W bulbs are connected to the same 220 V mains supply.
How will their brightness compare when they are (i) in series and (ii) in parallel?
(a) Both bulbs glow equally bright in series and in parallel
(b) Each bulb glows brighter in series than in parallel
(c) Each bulb glows dimmer in series than in parallel
(d) In series, each bulb glows with exactly half the brightness it has in parallel