# Three electric bulbs with same voltage ratings of 110 volts but wattage ratings of 40, 60 and 100 watts respectively are connected in series across a 220 volt supply line. If their brightness are respectively, then a) b) c) d) Bulbs will burn out due to the high voltage supply

## Question ID - 150217 :- Three electric bulbs with same voltage ratings of 110 volts but wattage ratings of 40, 60 and 100 watts respectively are connected in series across a 220 volt supply line. If their brightness are respectively, then a) b) c) d) Bulbs will burn out due to the high voltage supply

3537

 (a) Resistance of a bulb For a given voltage  Rate of heat produced, When the bulbs are connected in series, the current flowing through each bulb is same As  Consider a rectangular slab of length and area of cross section A current is passed through it. If the length is doubled, the potential drop across the end faces a) Becomes half of the initial value b) Becomes one-fourth of the initial value c) Becomes double the initial value d) Remains same 