Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains?
No its C ... bcx P is inversely propotional to R ... hence 100W bulb will have minimum resistance nd according to V=IR more current will pas hence it will burn most brightly
JIBRAN said:
the answer is c) because its resistance is least.
minal said:
does current not remain same in series despite of any condition?
Ahmad said:
But power is directly proportional to resistance in series so A is correct
